2-Hydroxy-3-methylcyclopent-2-en-1-one · Cyclotene · Methyl Cyclopentenolone · CAS 80-71-7
Gaur ki Khushbu (گاۄر کی خوشبو) — sweet caramellic maple, roasted walnut, tobacco-licorice. Found naturally in fenugreek (methi), maple syrup, and roasted coffee. IFRA-unrestricted, FEMA GRAS 2700. A gourmand and tobacco accord centrepiece with extraordinary 16-hour longevity. Complete scientific, olfactory, and Pakistani formulation reference.
CAS 80-71-7 (enol, preferred) · CAS 765-70-8 (keto) EC 212-154-8 · FEMA 2700 · InChI: PJUIMOJAAPLTRJ
Molecular Formula
C₆H₈O₂ · MW 112.13 g/mol SMILES: CC1=C(O)CCC1=O · Cyclopentenone ring
Physical Form
Pale yellow to white monohydrate crystalline powder · MP 215–217°C · Density ca. 1.07 g/cm³
Flash Point / Log P
Flash point >93°C (Tag Closed Cup) Moderate log P; hydrogen bonding via enol-OH
Solubility
1g / 72mL water at 25°C · Freely soluble in ethanol, DPG, glycerin · Good solubility in boiling water
Fragrance Family
Gourmand · Oriental · Fougere · Tobacco · Chypre Note position: Heart to Base · Longevity: 10–16 hrs
Halal Status
✓ Halal Eligible — fully synthetic, acyloin condensation from petrochemical glutaric acid derivatives. No animal inputs, no ethanol, no fermentation haram substrates
Odour Character
Sweet caramellic maple, roasted coffee, walnut, licorice-tobacco, bready warmth · Gaur ki Khushbu (گاۄر کی خوشبو) · Maillard-reaction complexity
Odour Threshold
~0.1 ppm (air) · ~50 ppb (aqueous) — very potent. Odour strength 8/10. Use sparingly; effective at trace levels in compound
IFRA Status (51st)
✓ Unrestricted — not listed in IFRA 51st Amendment. No category limits across fine fragrance, attar, personal care, bakhoor, or home fragrance
EU Allergen Status
✓ Not listed — EU Cosmetics Reg. 1223/2009 Annex III. No mandatory allergen declaration required at any concentration
3–5 years properly stored; >5 years excellent storage. Re-seal immediately after use; use desiccant. Monohydrate crystals can cake in high humidity
Introduction
Gaur ki Khushbu — The Caramellic Molecule
Maple Lactone is one of the most captivating aroma chemicals in the professional perfumer's palette — a crystalline powder that, in the words of the legendary fragrance encyclopaedist Steffen Arctander, delivers "a sweet and very powerful, caramellic-spicy odour" with uniquely nutty, tobacco-like, and licorice facets unlike any other single ingredient. At trace concentrations, it smells of warm maple syrup dripping over toasted walnut; at higher levels, it develops a roasted, bready coffee quality that anchors oriental and tobacco compositions with remarkable depth. It is simultaneously a flavourist's workhorse — approved as FEMA GRAS 2700 — and a perfumer's secret weapon, historically present in landmark compositions from Jicky (Guerlain, 1889) and Shalimar (1921) to A*Men (Thierry Mugler, 1996) and Bulgari Black (1998).
For Pakistani fragrance professionals, Maple Lactone occupies a uniquely strategic position. The Pakistani olfactory imagination is intimately connected to warmth, sweetness, and brown-spice richness — the aromas of jaggery (gaur), cardamom chai, freshly baked naan, and the candied dried fruits of Eid celebrations. Maple Lactone speaks directly to this sensory vocabulary while introducing sophisticated Western gourmand character that appeals to the growing urban consumer segment. Attar makers in Lahore and Karachi can use it to add unprecedented depth to gourmand compositions; bakhoor producers will find it transforms charcoal-heated bases with a burnt-caramel richness reminiscent of Arabian oud smokiness. Crucially, Maple Lactone's natural presence in fenugreek seeds — the methi of Pakistan's culinary and Unani heritage, referenced in Hadith literature as a blessed food — gives it a cultural and spiritual resonance unique among aroma chemicals. It is both a modern perfumery material and a molecule woven into Pakistan's aromatic soul.
Bio Shop™ Pakistan — Sourcing Note
Bio Shop™ Pakistan stocks Maple Lactone at fragrance/food grade quality, CAS 80-71-7 (enol form, preferred), ≥99% GC purity. Available in pure crystalline form and as a 10% DPG dilution for precise dosing at trace levels. The pure crystals are the most cost-effective format at ≥1% in compound; the 10% DPG dilution is essential for sub-0.5% use levels where accurate weighing of crystals is challenging. GC Certificate of Analysis provided with each batch. Visit bioshop.pk/products/maple-lactone-methyl-cyclopentenolone for current pricing and stock.
Molecular Identity
Chemical Identification
IUPAC Name2-Hydroxy-3-methylcyclopent-2-en-1-one
CAS (Enol)80-71-7 — preferred, potent, commercially dominant tautomer
CAS (Keto)765-70-8 — 3-methyl-1,2-cyclopentanedione; weaker form, not recommended
Urdu / PakistanGaur ki Khushbu (گاۄر کی خوشبو) · میپل لیکٹون · naturally present in methi (fenugreek) — a blessed spice in Hadith
Grade & Purity Profiles
Four Commercial Grades
Maple Lactone requires careful grade selection because two chemically distinct forms are commercially available: the enol tautomer (CAS 80-71-7) and the keto/diketone form (CAS 765-70-8). Always specify the enol form — the preferred, more stable, and significantly more potent tautomer. Bio Shop™ Pakistan stocks the professional enol form at ≥99% GC purity as both pure crystals and 10% DPG dilution.
Professional Standard · Bio Shop™ Grade
Enol Crystals ≥99% GC
CAS 80-71-7 · Pure pale yellow crystals · Preferred & potent tautomer · International manufacturers
GC Purity (enol form)
≥99%
Melting pt 215–217°C · Monohydrate crystals · Density ~1.07 g/cm³
"The professional standard. Unmistakably caramellic-maple with distinct walnut and tobacco facets on blotter at 0.1% in DPG. Bio Shop™ primary stock. GC CoA with every batch. Most cost-effective format for compound use at ≥1%. Store sealed in aluminium or amber glass with desiccant."
Trace-Level Precision · Pre-Diluted
10% DPG Dilution
CAS 80-71-7 at 10% in DPG · Clear liquid · 10× easier to measure · Bio Shop™ stocked
Active Content
10%
1g of dilution = 0.10g actual Maple Lactone · RI 1.432–1.436 at 20°C
"Essential for compound use at 0.5% or below, where measuring pure crystals on a consumer balance introduces unacceptable error. 1g of 10% solution = 0.10g actual Maple Lactone — adjust formula accordingly. Purchase from bioshop.pk/products/maple-lactone-10-in-dpg."
Food & Flavour Grade · FCC/FEMA
Food Grade ≥98% GC
CAS 80-71-7 · Heavy metal limits · Arsenic <2 ppm · FEMA GRAS 2700 documentation
GC Purity
≥98%
Stricter microbiological & heavy metal limits for food applications
"Required for food and beverage applications under FEMA GRAS 2700. Used by Pakistani halwai confectioners in caramel candies, bakery, and maple-flavoured mithai. Do not use standard fragrance grade for food applications without food-grade CoA. Bio Shop™ fragrance grade also meets food-grade purity."
⚠ Avoid Without Verification
Diketone / Adulterated
CAS 765-70-8 mislabelled as Maple Lactone · Ethyl Maltol dilution · Caramel flavour blends
Effective Potency
Inferior
Weaker, less stable · poor batch consistency · no tobacco-walnut depth
"Diketone (765-70-8) test: compare odour intensity at equal weights — inferior material is noticeably weaker. Ethyl Maltol test: if it smells of cotton-candy with no nutty-tobacco depth, suspect dilution. Physical test: pure Maple Lactone = crystals; a clear liquid 'pure' product is fraudulent. Always request CoA specifying CAS 80-71-7."
Dosage Science
Concentration Behaviour
Maple Lactone is exceptionally potent — an odour strength of 8/10 means small errors in weighing translate to large olfactory errors in the finished composition. Its detection threshold of ~0.1 ppm in air means sub-0.1% additions create genuine olfactory impact; above 3%, the character shifts from luxurious caramellic sweetness to an intense, bready-acrid quality suitable only for tobacco or industrial applications. The sweet spot for most Pakistani fragrance applications lies between 0.2–2% in compound — powerful enough for commercial impact, restrained enough for a balanced, wearable composition.
<0.05% in CompoundSubconscious Warmth
Below conscious caramellic perception; imparts a subtle background warmth and sweetness to oriental and fougere bases. Enriches floral compositions imperceptibly. Ideal for fine fragrance where caramellic character is unwanted but warmth is desired
0.05–0.2% in CompoundWalnut-Tobacco Warmth
Gentle walnut-caramel warmth with tobacco suggestion; caramellic character identifiable by trained nose but not dominant. Ideal for oriental base enrichment, fougere heart fortification alongside coumarin, and personal care body lotion compounds
0.2–1% in CompoundClear Caramellic Maple
Distinct, rich caramellic maple character clearly perceptible; nutty-roasted quality develops. Classic zone for gourmand accords, coumarin-Maple Lactone fougere pairs, and tobacco oriental bases. Best range for EDPs targeting Pakistani and Gulf export oriental market
1–3% in CompoundPowerful Gourmand Centrepiece
Powerful sweet maple-coffee character; dominant note in the composition. Suitable for tobacco accord leads, DPG-based wedding attars where exceptional longevity is required, and bakhoor compounds for premium market positioning. Use with careful evaluation
3–6% in CompoundIntense — Handle Carefully
Intense bready-caramel with roasted, slightly acrid edges; character pushes toward industrial tobacco flavour territory. Suitable for agarbatti and bakhoor compound where combustion softens the character, or dedicated tobacco replication accords. Not for fine fragrance or body products
Above 6% in CompoundOverdose — Not Recommended
Very powerful burnt-sweet-acrid; food flavour concentrates only. At these levels the cyclopentenone character overwhelms the composition. Reserve strictly for tobacco concentrate production, industrial food flavouring applications, or analytical reference purposes
Sensory Analysis
Olfactory Evolution
Opening · 0–15 min
Caramellic Revelation
Maple Lactone opens with a rush of warm, dark maple syrup sweetness that immediately reveals roasted coffee, buttery walnut, and a subtle spice-tobacco whisper. At 0.1% in DPG — the professional evaluation concentration — it reads as a luxurious dessert accord, simultaneously reminiscent of freshly poured Canadian maple syrup on warm pancakes, the first sip of kahwa chai sweetened with mountain honey in Khyber Pakhtunkhwa, and the burnt-caramel notes of sheer korma reduced to glossy perfection. In Pakistan's hot climate — Lahore at 42°C, Karachi at 35°C — skin temperature elevation creates a pronounced caramellic bloom on application; the compound's hydrogen-bonding enol-OH activates olfactory receptors strongly, announcing its character with exceptional immediacy. The opening is never sharp or synthetic; the five-membered cyclopentenone ring geometry provides an inherent roundness and complexity that simple caramel aroma chemicals lack.
Heart · 15 min–1 hr
Nutty-Coffee Warmth
As the initial caramellic sweetness matures, the nutty walnut-coffee and roasted bready facets come forward — the olfactory register associated with a traditional desi halwai's shop: walnut barfi being set on a marble slab, strong kahwa chai, the sweet-roasted aroma of freshly toasted almonds at a Lahore winter bazaar. This heart character is Maple Lactone's greatest commercial value: it is simultaneously familiar and exotic, eastern and western, traditional and contemporary. At this stage it functions as a powerful coumarin fortifier — when combined with coumarin at a 1:4–1:8 ratio, as described by Arctander and confirmed in modern fougere construction, it creates a warm, rounded new-mown-hay character that plain coumarin cannot achieve alone. The subtle licorice-tobacco undertone that emerges in this phase is the compound's most distinctive feature and the source of its appeal in historic fougere and tobacco-oriental compositions.
Dry-down · 1–4 hr
Tobacco-Sweet Depth
The dry-down phase reveals Maple Lactone's most sophisticated facet: a warm, tobacco-adjacent sweetness with a coumarin-style dryness beginning to emerge. This is the character most associated with classical fougere bases — the warm winter chai with tobacco-smoke undertone, the dry-sweet register of a well-aged oriental attar. On Pakistani skin, where diet and microbiome create a naturally warm skin scent, this dry-down phase creates an exceptional accord: Maple Lactone's caramellic warmth merges with the wearer's skin chemistry to produce something uniquely personalised. In Karachi's humid climate, the sustained moisture on the skin surface slightly extends this phase, creating a more persistent sweet impression; in Lahore's dry heat, the dry-down phase is more pronounced and the tobacco facets emerge more clearly. Formulators should ensure the base notes — Tonka, Benzyl Benzoate, Ambroxan — are sufficiently developed to support Maple Lactone's departure from the skin surface.
Persistence · 4–16 hr+
Fabric Memory
Maple Lactone's most commercially remarkable property is its exceptional longevity — 10–16 hours on skin, and a detectable ghost presence on fabric that can persist for days. This outstanding substantivity, remarkable for a molecule of only 112 g/mol, stems from the enol-OH group's hydrogen bonding with skin keratin and fabric fibres, creating a molecular anchor that resists evaporation. On the shalwar kameez of a Pakistani wedding guest, a composition built around Maple Lactone retains a warm, sweet ambery ghost that recalls the celebration itself. For Pakistani attar consumers who expect their fragrance to last through an entire day of activities — from morning prayers through evening mehendi — Maple Lactone's longevity is a genuine selling point, not merely a technical property. The fabric character is most pronounced on natural fibres (cotton, silk) that interact strongly with the compound's enol functionality.
Three production-ready formulas from the Bio Shop™ Pakistan reference document — exact weights, exact percentages. All ingredients available at bioshop.pk. Formula 1 is a DPG attar (no alcohol — halal for all markets). Formula 2 is a warm gourmand oriental EDP compound using Perfume Premix as the sole alcohol base. Formula 3 is a warm gourmand body lotion compound used at 1% loading.
1. Warm Benzyl Benzoate to 40°C. 2. Dissolve Maple Lactone crystals and Coumarin into warm Benzyl Benzoate — stir until fully dissolved. 3. Add Rose Wardia and Tonka Bean Oil; mix. 4. Add Ethyl Maltol 10% DPG dilution. 5. Top up to 100g with DPG; stir well. 6. Seal and macerate 2 weeks minimum at room temperature. Longevity: 10–14 hrs skin · 48+ hrs fabric. Target: Pakistani women, winter weddings, Eid gifting. Character: jaggery-warm caramellic rose with deep tonka-coumarin base.
Burnt Sugar EDP · گرم مٹھائی ای ڈی پی
Warm Gourmand Oriental EDP Compound · Perfume Premix base · 100g compound · Urban youth 18–28 · Dessert-inspired fine fragrance
1. Dissolve Maple Lactone 10% DPG and Ethyl Maltol 10% DPG in DPG. 2. Melt Coumarin into Benzyl Benzoate at 40°C; stir until clear. 3. Combine all fragrance components; add Rose Wardia. 4. Blend completed 100g compound into 9,900g cooled unscented lotion base at 1% loading. pH target: 5.5–6.5. Performance: warm sweet rose-caramellic skin scent with 4–6 hr longevity on skin. EU export: no allergen declaration required for Maple Lactone.
Synergies
Classic Pairings
Maple Lactone's most commercially important synergies are with coumarin-family materials and with oriental base notes. The Coumarin pairing (1:4–1:8 ratio) is the foundation of professional fougere construction, documented by Arctander and confirmed in every major fragrance house's classical compositions. The following pairings represent the most technically validated and commercially successful combinations for Pakistani formulation.
Pyranone · 6-membered ring · Cotton-Candy, Strawberry-Caramel
Aroma vs. Maple Lactone
Sweet cotton-candy, strawberry-caramel; lighter, simpler, no tobacco-walnut depth or complexity. More candy-like, less rounded
Threshold / IFRA
~0.05 ppm — even more potent · ✓ IFRA unrestricted · Not EU allergen-listed · FEMA GRAS
Use With Maple Lactone
Essential complementary addition: Ethyl Maltol adds candy-sweet lift above Maple Lactone's deeper caramellic-tobacco foundation
Pakistan Application
Budget-friendly candy-sweet note alone; premium combined with Maple Lactone for full gourmand complexity
Verdict: Best companion, not substitute. Maple Lactone provides the caramellic depth and tobacco complexity; Ethyl Maltol adds candy-sweet brightness above it. Together they cover the full gourmand register.
New-mown hay, tonka, powdery-sweet; no caramellic, no nutty-walnut depth. Complementary olfactory register — dry vs. warm
Threshold / IFRA
~0.5 ppm — less potent · ⚠️ IFRA Restricted (Category 4 leave-on: 1.6% max) · Not EU allergen-listed
Use With Maple Lactone
The classic synergistic pair (1:4 to 1:8 ratio). Coumarin's hay dryness and Maple Lactone's caramellic warmth together create exceptional fougere and oriental depth
Pakistan Application
IFRA restriction requires back-calculation in leave-on products. Maple Lactone has no such restriction — use it to extend the accord where Coumarin headroom runs out
Verdict: Strategic complement with IFRA advantage. Maple Lactone is unrestricted where Coumarin is limited — use Maple Lactone to carry the caramellic depth in formulas requiring IFRA compliance headroom.
Furaneol (HDMF)
Furanone · 5-membered oxygen ring · Strawberry-Caramel, Fruity-Sweet
Aroma vs. Maple Lactone
Intensely sweet strawberry-caramel, fruity-candy; no tobacco or walnut depth; more candy-like, less nutty and smoky
Threshold / IFRA
~0.001 ppm — extremely potent · ✓ IFRA unrestricted · Not EU allergen-listed
Use With Maple Lactone
Occasional combination for fruity-gourmand confectionery accords; use with extreme care — Furaneol at very low levels only (0.001–0.01%)
Pakistan Application
More appropriate for fruity-sweet body care; not suitable for traditional oriental or tobacco compositions where Maple Lactone excels
Verdict: Different register. Furaneol is a strawberry-candy material; Maple Lactone is a caramellic-tobacco material. Not interchangeable. Choose based on target character — sweet-fruity vs. warm-nutty-gourmand.
Vanillin
Phenolic Aldehyde · Vanilla, Creamy, Sweet
Aroma vs. Maple Lactone
Creamy vanilla, simple sweet; no walnut-tobacco depth, no caramellic roasted quality. Softer, more universally familiar character
Threshold / IFRA
~0.02 ppm · ✓ IFRA unrestricted · Not EU allergen-listed · FEMA GRAS · Lower cost
Use With Maple Lactone
Excellent combination: Vanillin at 1–3% + Maple Lactone at 0.5–1% creates a caramellic-vanilla accord with exceptional depth and roundness
Pakistan Application
Standard oriental sweet base — Vanillin + Maple Lactone + Coumarin + Tonka is the classic Pakistani warm-oriental accord foundation
Verdict: Complementary partners. Vanillin adds familiar creamy sweetness; Maple Lactone adds the caramellic-tobacco sophistication that distinguishes a complex oriental from a simple vanilla fragrance.
Safety & Regulations
IFRA & Safety Overview
Educational summary of publicly available regulatory data as of 2024. Always consult the current IFRA Standards (51st Amendment), the ingredient Safety Data Sheet, RIFM Safety Database, and your regulatory advisor before commercial formulation. This document does not constitute regulatory or safety advice.
✅
IFRA 51st Amendment — Unrestricted
Maple Lactone (CAS 80-71-7 / 765-70-8) is NOT listed in the IFRA 51st Amendment Standards. No restriction, specification, or prohibition applies across any of the 12 product categories — including fine fragrance, attar, personal care, soap, candle, bakhoor, or home fragrance. This is a significant advantage over Coumarin (IFRA-restricted at leave-on levels) and many other caramellic aroma chemicals. Pakistani perfumers may use Maple Lactone at any technically appropriate level subject only to good manufacturing practice and professional olfactory evaluation. RIFM assessment confirms no sensitisation concern and no reproductive toxicity concern at industry use levels.
✅
EU Allergen Status — NOT Listed (Export Advantage)
Maple Lactone is not listed under EU Cosmetics Regulation 1223/2009 Annex III as a mandatory declarable fragrance allergen — either in the current regulation or in the proposed expanded list. Pakistani manufacturers exporting to EU and UK markets can include Maple Lactone without allergen labelling requirements, simplifying regulatory documentation compared to many other aroma chemicals (Linalool, Geraniol, Coumarin derivatives) that do require EU declaration. Monitor ongoing EU Cosmetics Regulation amendment processes. Clean allergen status reflects the good general tolerability profile of cyclopentenone aroma chemicals in skin contact applications.
✅
FEMA GRAS 2700 & Pakistan DRAP — Fully Compliant
FEMA GRAS status (FEMA 2700) confirms Maple Lactone as generally recognised as safe for food flavouring applications in the USA, with permitted use in confectionery, beverages, bakery, and tobacco flavouring at defined levels. In Pakistan, DRAP cosmetics guidelines do not specifically restrict individual aroma chemicals with this safety profile. FEMA GRAS status is widely accepted by Pakistani food regulators as the international benchmark for food safety. PSQCA compliance for cosmetic use is readily achievable. Halal status: confirmed — no porcine material, no animal derivatives, no ethanol, no haram fermentation substrates in the synthesis pathway.
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Human Safety Profile — Well Characterised
Acute oral LD₅₀ in rat >1.85 g/kg (Moreno, 1976) — low acute toxicity classification. Acute dermal LD₅₀ (guinea pig) >2.0 g/kg. RIFM safety assessment: no evidence of sensitisation at fragrance use levels; not listed as allergen. Eye contact may cause mild transient irritation — avoid direct eye contact and use appropriate PPE. Skin irritation: generally non-irritating at use concentrations; avoid undiluted skin contact. No evidence of carcinogenicity or reproductive toxicity in available data. Environmental fate: biodegradable; low bioaccumulation potential. Flash point >93°C — not classified as flammable under GHS for crystals. Handle in ventilated workspace.
⚠️
pH Sensitivity — Soap & Alkaline Formulations
At strongly alkaline pH (>9), Maple Lactone's enol hydroxyl can participate in aldol-type condensations with carbonyl compounds in the formulation, potentially producing off-notes over time. This is practically relevant in high-pH soap formulations (saponified soap typically pH 9–10). Pakistani soap formulators should conduct accelerated stability testing (40°C, 12 weeks) before commercial launch. Limit usage in soap to 0.05–0.2% in compound as a precaution. Standard fragrance pH (4–8) presents no stability concern. Note also: candle wax above 180°C causes partial thermal decomposition — always add Maple Lactone to cooled wax below 60°C.
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Tautomeric Form — Critical Purchase Specification
Always specify CAS 80-71-7 (enol tautomer) on purchase orders. Some suppliers — particularly low-cost grey market sources in Pakistan — supply the keto/diketone form (CAS 765-70-8, 3-methyl-1,2-cyclopentanedione), which is significantly weaker, less stable, and performs poorly in compositions. The diketone form slowly reverts to the enol form in solution but gives inferior initial performance and poor batch-to-batch consistency. Request a GC Certificate of Analysis showing the dominant peak at retention time consistent with the enol form. Under strongly acidic conditions (pH <3), equilibrium may shift toward the diketone form — avoid mineral acids in formulations containing Maple Lactone. Bio Shop™ Pakistan stocks only CAS 80-71-7.
Handling & Storage
Storing in Pakistan's Climate
Temperature
10–25°C ideal; stable up to 40°C. Above 40°C: accelerated oxidative degradation of the enol double bond. Air-conditioned storage essential in Pakistan's summer months
Container Type
Sealed aluminium bag (as supplied) or amber glass jar with PTFE-lined cap. Maple Lactone is hygroscopic — never use permeable packaging. Avoid iron, copper, and reactive metals
Humidity Control
Keep below 60% RH. Maple Lactone monohydrate crystals absorb moisture in humid conditions, causing crystal caking. Use desiccant silica gel packets in storage bag or container. Weigh in a low-humidity environment
Shelf Life (sealed)
3–5 years properly stored; >5 years excellent storage. Once opened: re-seal immediately; 2–3 year useful life with good discipline. Compositions improve with 2–4 weeks maturation at room temperature
Measuring Technique
Pure crystals: use 0.001g analytical balance for <0.5% in compound; 0.01g balance for ≥1% in compound. If crystals have caked, warm gently to 40–50°C before weighing — material remains fully usable
10% DPG Dilution
Prepare: dissolve 10g pure Maple Lactone crystals in 90g DPG at 40°C with stirring. Cool and seal. Critical: 1g of 10% solution = 0.10g actual Maple Lactone. Adjust formula accordingly. Store as per DPG guidelines
Lahore Summer (May–Sep)
Temperatures 38–45°C. Mandatory air-conditioned storage. Never leave in vehicles in summer heat. Use insulated cooler boxes for transportation. Winter cold near 0°C is not harmful — crystals may compact; warm gently before weighing
Karachi Coastal Climate
High humidity 75–90% RH year-round. Crystal caking is the primary risk. Use dehumidifier in storage room where possible. Seal containers immediately after every use. Summer temperatures >35°C require same cooling precautions as Lahore
⚠ Purity verification: Genuine Maple Lactone (CAS 80-71-7, ≥99% GC) = pale yellow to white monohydrate crystals. A clear liquid labelled "pure" is fraudulent. Odour at 1% in DPG: unmistakably caramellic-maple with walnut and tobacco facets. If smell is purely candy-sweet = Ethyl Maltol substitution. If noticeably weak at equal weight vs. reference = diketone (CAS 765-70-8). Longevity test: apply 1% DPG on blotter; genuine material remains perceptible for 12–16+ hours. Inferior grades fade in 2–4 hours. Always request GC Certificate of Analysis specifying CAS 80-71-7 from any supplier.
FAQs
Frequently Asked Questions
How do I verify purity and the correct tautomeric form of Maple Lactone? What adulterants are common in Pakistan?+
The most important verification step is confirming you have the enol form (CAS 80-71-7) rather than the diketone keto form (CAS 765-70-8). Always request a Certificate of Analysis specifying the CAS number and a GC chromatogram showing the dominant peak at the retention time consistent with 80-71-7. Four field tests are available. First, the visual test: genuine Maple Lactone presents as pale yellow to white crystals — never a clear liquid; any "pure" product in clear liquid form is immediately suspicious. Second, the odour test at 1% in DPG: authentic material smells unmistakably caramellic-maple with distinct walnut and tobacco facets; purely sweet candy character suggests Ethyl Maltol dilution. Third, the longevity test: apply 1% DPG solution to a blotter strip — genuine Maple Lactone remains detectable for 12–16+ hours; inferior grades fade within 2–4 hours. Fourth, the potency comparison: weigh equal amounts of your material and a reference sample in DPG — the diketone form (765-70-8) is noticeably weaker at the same weight. Common Pakistan market adulterants are: (1) the weaker diketone tautomer sold as Maple Lactone, (2) Ethyl Maltol blended into the product, (3) caramel flavouring concentrates, and (4) Vanillin diluted into a caramel-scented blend. Always purchase from a reputable supplier with full CoA documentation — Bio Shop™ Pakistan provides this for every batch.
How should I store Maple Lactone in Pakistan's hot and humid climate?+
Pakistan's climate presents specific and distinct challenges for both Lahore and Karachi storage conditions. In Karachi, summer humidity and temperatures exceeding 35°C cause the monohydrate crystals to cake — the hygroscopic crystal lattice absorbs atmospheric moisture, causing individual crystals to fuse into a solid mass. Store in the original sealed aluminium bag or transfer to an amber glass jar with PTFE-lined lid; include a silica gel desiccant sachet; keep in an air-conditioned room; avoid kitchen areas or locations near hot water pipes. If crystals have already caked, do not discard — warm gently to 40–50°C and the material remains fully usable. In Lahore, summer heat exceeding 40°C (May–August) requires the same cooling precautions for oxidative stability. Lahore's winter cold (near 0°C, December–January) is not harmful; crystals remain stable at low temperatures. The universal rules for both cities: seal immediately after each use; use desiccant in storage; keep below 25°C in air-conditioned storage; minimise headspace in partially used containers. Under these conditions, 3–5 years shelf life from manufacture date is reliably achievable.
Is Maple Lactone halal? What is its exact synthesis origin?+
Maple Lactone (CAS 80-71-7) is halal eligible. The complete synthesis chain: (1) Starting material — diethyl 2-methylglutarate, derived from petrochemical adipic acid or bio-based succinic acid fermentation from plant carbohydrates. (2) Ring closure — acyloin condensation using sodium metal in anhydrous toluene at 80°C; sodium is a mineral element, toluene is a petrochemical solvent; no animal material. (3) Oxidation/tautomerisation — cupric acetate in methanol at 60°C; copper acetate and methanol are entirely mineral/chemical in origin. (4) Purification — recrystallisation from ethanol/water; the ethanol is used as a solvent in the manufacturing process only, not as a carrier in the final product, and is completely removed during crystallisation. The compound does not contain ethanol in the final form. (5) The enol functional group (C=C–OH) in the final molecule is a vinyl alcohol, chemically distinct from ethanol (CH₃CH₂OH) and unrelated to drinking alcohol. No animal-origin materials, no porcine derivatives, no haram fermentation substrates, no ethanol in the final product. Bio Shop™ Pakistan can provide manufacturer halal compatibility documentation on request for professional accounts requiring formal documentation for Islamic authority review.
What is the correct usage percentage? When should I use pure crystals vs. the 10% DPG dilution?+
The choice between pure crystals and 10% DPG dilution depends entirely on the target usage level in your compound. Use the 10% DPG dilution when your target is 0.5% or below in compound — at these levels, measuring pure crystals on a consumer-grade 0.01g balance introduces unacceptable error. Even a 0.1g weighing error at a 0.2% target (0.2g of crystals in 100g compound) represents a 50% error in the active ingredient. The 10% DPG version gives you a tenfold increase in working quantity, turning that 0.2g into 2.0g of dilution — well within the accurate range of a standard digital balance. Use pure crystals when your target is 1% or higher in compound — at these levels, the weighing accuracy of a 0.01g balance is sufficient and pure crystals are the most cost-effective format. Critical formula notation: always record "X% of 10% DPG solution (= Y% actual Maple Lactone)" to prevent confusion during scale-up. Formula 1 (attar) uses pure crystals at 2% because the usage level is well above 1%. Formula 3 (body lotion) uses 10% DPG dilution at 0.5% (= 0.05% actual) because the usage level is below 0.5%.
Is synthetic Maple Lactone equivalent to natural Maple Lactone from beechwood tar?+
For all practical fragrance formulation purposes, synthetic Maple Lactone (CAS 80-71-7) is identical to the natural compound isolated from beechwood tar. Both are the same molecule — same CAS number, same molecular formula, same olfactory character. The natural beechwood tar fractions contain additional complex components (phenols, pyrazines, guaiacol derivatives) that give the natural tar an earthy, smoky complexity, but these are impurities rather than desirable fragrance additions in most applications. The pure synthetic form provides a cleaner, more consistent, more potent, and more cost-effective caramellic character for professional use. Furthermore, natural beechwood tar isolation is no longer commercially viable at scale, and "natural" Maple Lactone from beechwood tar is simply not available as a commercial fragrance ingredient. Synthetic is the only commercially viable professional standard, and its purity and consistency advantages are unambiguous. For Pakistan domestic, Gulf export, or standard international cosmetic applications, synthetic fragrance grade is always recommended. Both synthetic and natural forms are fully halal.
Does Maple Lactone have any IFRA restrictions? What about exporting to the EU?+
For Pakistan domestic market: no current restriction whatsoever. Maple Lactone is not listed in the IFRA 51st Amendment at all — use it at any technically appropriate level across all product categories. This is a key advantage over Coumarin, which is IFRA-restricted at leave-on levels, and makes Maple Lactone the preferred caramellic material when IFRA headroom is a concern. For EU or UK export products: Maple Lactone is NOT listed under EU Cosmetics Regulation 1223/2009 Annex III as a mandatory declarable allergen. Pakistani manufacturers exporting to the EU can include Maple Lactone without triggering additional allergen labelling requirements. For food applications: FEMA GRAS status (FEMA 2700) covers use in food and beverages in the USA at defined levels; consult a food regulatory consultant for specific EU food use applications (EU Regulation 1334/2008 governs food flavourings). REACH compliance documentation is available from major manufacturers for EU export purposes. For US fragrance export: RIFM evaluation is on file and supports safe use. Monitor ongoing regulatory updates through IFRA and your EU regulatory consultant, as allergen lists and fragrance regulations evolve.
Which Pakistani consumer segments respond best to Maple Lactone compositions?+
Four primary Pakistani consumer segments show strong commercial response to Maple Lactone-enriched compositions. First, female consumers aged 18–40 in urban centres (Lahore, Karachi, Islamabad) drawn to warm-sweet oriental fragrances — the food-memory connection with Pakistani mithai and chai creates immediate emotional resonance. Second, male consumers seeking warm-tobacco oriental attars and EDP sprays — the tobacco-caramellic register is highly valued in the 25–45 age range, particularly for formal and wedding wear. Third, bakhoor buyers — predominantly older, more traditional consumers in Punjab and Sindh — who appreciate the caramellic sweetness that enriches oud-resin bakhoor compositions; Maple Lactone at 1–3% in bakhoor compound creates a premium sweet-oud character associated with Arabian luxury products. Fourth, the Eid and wedding gifting market, where Maple Lactone-enriched attars and EDPs command premium pricing due to their warmth, longevity, and the deep cultural resonance of their caramellic-sweet character. Seasonally, peak demand falls in the winter months (November–February), which coincides with wedding season and Eid celebrations. Regionally: Lahore consumers prefer caramellic richness paired with rose and sandalwood; Karachi consumers prefer it with musks and clean woods for a more contemporary gourmand character; Gulf export buyers prefer the full tobacco-caramellic oriental treatment.
What Urdu names work for Maple Lactone compositions? How does it perform in Pakistan's heat?+
Effective Urdu naming vocabulary draws on Pakistan's caramellic-sweet food culture. Recommended name concepts: گاۄر کی خوشبو (Gaur ki Khushbu — fragrance of jaggery), گرم مٹھائی (Garm Mithai — warm sweetmeat), بھنی شکر (Bhuni Shakar — roasted sugar), شکری دھواں (Shakri Dhuwan — sweet smoke, for bakhoor), میٹھی رات (Meethi Raat — sweet night, for evening attar), عسل و عود (Asal o Oud — honey and oud, for traditional oriental). Full composition names: Gaur Ki Mithai Attar (گاۄر کی میٹھائی عطر — jaggery sweetmeat attar, ideal for wedding gifting); Burnt Sugar EDP; Sard Raat Bakhoor (سرد رات بخور — cold night bakhoor). Regarding summer performance: in Pakistan's hot weather, Maple Lactone's pronounced sweetness intensifies on heated skin due to accelerated volatilisation and enhanced hydrogen bonding at the skin surface. In Lahore's dry summer heat, this creates a rich caramellic bloom that can be genuinely enveloping. In Karachi's humid summer, the sweet concentration effect can become cloying if Maple Lactone is overdosed — for summer compositions targeting Karachi consumers, limit to 0.2–0.5% in compound and balance with dry musks (Galaxolide, Tonalide) and clean woods (Iso E Super) to maintain a fresh-warm balance. Winter attars can use the full 1–3% range without concern about sweetness concentration.
Everything on this page and substantially more — complete acyloin condensation synthesis mechanism with step-by-step diagrams, full keto-enol tautomeric equilibrium chemistry, detailed structure-odour relationship analysis including the critical role of the C3 methyl substituent, RIFM safety assessment data, Arctander's original Cyclotene characterisation notes, landmark fragrance attributions (Jicky, Shalimar, Tabac Blond, Brut, A*Men, Bulgari Black, Fahrenheit), natural occurrence data across maple syrup volatile fractions and allied Maillard-reaction foods, FEMA GRAS 2700 food flavouring permitted use levels by category, advanced Pakistani market segmentation analysis with three complete product concepts (Gaur Ki Mithai Attar, Burnt Sugar EDP, Caramel Body Lotion), full stability testing protocol for Pakistan climate conditions, synergistic blending ratios with coumarin and tonka, and a comprehensive glossary of 18 key aroma chemical terms — all compiled in one complete professional reference document.
