Methyl Cyclopentenolone
Methyl Cyclopentenolone, also known as corylone or cyclotene, is a brown-sugar, maple, and caramel flavour compound widely used to build sweet brown character. CAS 80-71-7.
The chemical name is 3-methyl-2-hydroxy-2-cyclopenten-1-one (also written as 2-hydroxy-3-methyl-2-cyclopentenone). Formula C₆H₈O₂, molar mass 112.13 g/mol. The material is a white to pale yellow crystalline solid with a strong sweet, burnt-sugar, maple aroma.
We source bulk Methyl Cyclopentenolone from top China manufacturers for our partners. The manufacturer is in Guangdong. A smaller requirement can ship in a combined container with other ingredients.
Please send the grade you need, the volume and your destination port, and we will come back with a solution and a price.
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- Packaging
- 25 kg kraft paper bag with PE inner liner
- ISO 9001
- HACCP
- Halal
- Kosher
Specifications
| Item | Specification |
|---|---|
| Appearance | White to pale yellow crystalline solid or flake |
| Odour | Sweet, caramellic, maple and burnt-sugar |
| Assay (GC) | ≥ 99.0% |
| Related Substances (GC) | ≤ 1.0% |
| Melting Range | 105-108°C |
| Loss on Drying | ≤ 0.5% |
| Residue on Ignition | ≤ 0.1% |
| Solubility | Soluble in 95% ethanol, propylene glycol and triacetin; slightly soluble in water |
| Clarity of Solution (10% in ethanol) | Clear, free from insoluble matter |
| Heavy Metals (as Pb) | ≤ 10 mg/kg |
| Lead | ≤ 2 mg/kg |
| Arsenic | ≤ 3 mg/kg |
| Shelf Life | 24 months in unopened original packaging, cool and dry |
Common Markets Grades
Methyl Cyclopentenolone is produced primarily as a high-purity flavour-grade crystal.
The standard specification is 99 percent minimum by GC. The product is a free-flowing crystalline powder or flake with a melting range around 105 to 108 degrees C.
A liquid solution form (typically 10 percent in propylene glycol or triacetin) is also offered for ease of dosing in beverage and dairy flavour compounding.
Packaging is in fibre drums with double polyethylene liners, with a typical shelf life of 24 months under cool, dry storage. Kosher and Halal certification is routinely available.
Applications
- Maple syrup and pancake syrup flavour reconstitutions
- Caramel, butterscotch, and toffee flavour bases
- Brown sugar, molasses, and treacle profiles
- Coffee and cocoa flavour systems for roasted depth
- Bakery flavourings for cookies, breads, and pastries
- Tobacco flavourings for sweet brown character
- Whisky, rum, and aged-spirit reconstitutions
- Nut flavours (walnut, pecan, hazelnut) for roasted notes
- Vanilla and butterscotch ice cream flavourings
- Process flavour reactions where it participates in Maillard chemistry as both substrate and product
China Manufacturers of Methyl Cyclopentenolone
Top Methyl Cyclopentenolone manufacturers in China.
Company names and logos are the property of the manufacturers themselves. They are listed here because our own directory records them as producing this ingredient. A listing is not an endorsement by them, and we do not represent them or speak on their behalf.
How We Help Source Methyl Cyclopentenolone
Direct Factory Sourcing
We run the whole process: selecting the manufacturer from the top Chinese food ingredient producers, negotiating the price, verifying quality, and coordinating the logistics. You deal with us instead of with several factories at once.
Original Packaging and Documents from the Manufacturer
The manufacturer sends your Methyl Cyclopentenolone out of its own factory in the original packing, through to your destination port. The COA, COO, MSDS, TDS and any certifications reach you from the manufacturer as well.
Free Samples and Lead Time
We send 100 to 500 g free for your own laboratory to test and you cover only the courier, usually within 2 to 3 working days. ETD is usually within 7 to 15 days once the order is confirmed, and we check that date against the factory's own manufacturing schedule before we give it to you.
Combined Shipment
We can load Methyl Cyclopentenolone together with other ingredients such as Capsicum Oleoresin, Ethyl Maltol and White Pepper into one 20' FCL. If your quantity is small, we can also ship LCL.
Regulatory Status
Methyl Cyclopentenolone is an approved flavouring substance in major markets.
It carries FEMA GRAS number 2700 and FLAVIS number 07.140. The European Union has it on the Union list of authorised flavourings.
The U.S. Food and Drug Administration recognises it as a synthetic flavouring substance under 21 CFR 172.515. JECFA has evaluated the cyclic hydroxyketone group and placed the compound in a class of no safety concern at current intake.
Both synthetic and natural-identical grades are commercially available, with Kosher and Halal documentation available on request.
Manufacturing Process
Methyl Cyclopentenolone is produced by ring synthesis from acyclic precursors.
The most common industrial route starts from succinic ester or succinic acid derivatives. Condensation with propionate units, followed by Dieckmann or aldol-type ring closure and acid-catalysed enolization, gives the 2-hydroxy-3-methyl cyclopentenone framework.
An alternative route uses oxidation of 3-methyl-cyclopent-2-enone or rearrangement of related dihydroxy precursors. Catalyst choice and reaction control determine the yield and purity of the desired enol tautomer.
Final purification is by recrystallisation from a polar protic solvent, giving the high-purity crystalline product. The compound also occurs naturally in trace amounts in roasted coffee, maple syrup, and roasted chicory, formed through Maillard and caramelization chemistry.
