Methyl cyclopentenolone CAS#80-71-7

CAS Number: 80-71-7
Chemical Formula: C6H8O2
Synonyms:

2-Hydroxy-3-methylcyclopent-2-en-1-one
2-HYDROXY-3-METHYLCYCLOPENT-2-ENONE
2-HYDROXY-3-METHYL-2-CYCLOPENTENE-1-ONE

Appearance: White Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Methyl cyclopentenolone CAS#80-71-7

Methyl cyclopentenolone occurs in beechwood tar and has a caramel-like (burnt sugar) odor. It has been identified as a flavor component in food. Crystals of the compound usually contain 1 mol of water. Synthetic routes of production are of limited importance in comparison with isolation from beechwood tar. Homologs of cyclotene such as 3-ethyl-2-hydroxy-2-cyclopenten-1-one, C7H10O2, Mr 126.16, 2-hydroxy-3,4-dimethyl-2-cyclopenten-1-one, C7H10O2, Mr 126.16, and 2-hydroxy-3,5-dimethyl-2-cyclopenten-1-one, C7H10O2, Mr 126.16, are also used as flavor ingredients and have similar caramel-like properties.
Cyclotene and its homologs are frequently used in flavor compositions for its caramel note, for example, in beverages and in confectionery.

Methyl cyclopentenolone Chemical Properties

Melting point	104-108°C
Boiling point	170.05°C (rough estimate)
density	1.0795 (rough estimate)
vapor pressure	2.1hPa at 20℃
FEMA	2700 \| METHYLCYCLOPENTENOLONE
refractive index	1.4532 (estimate)
Fp	100°C
storage temp.	Store at +2°C to +8°C.
solubility	Chloroform (Slightly), Methanol (Slightly)
pka	9.21±0.20(Predicted)
form	crystals
color	White crystalline powder or fine crystals
Odor	at 1.00 % in dipropylene glycol. caramel maple syrup
Odor Type	caramellic
biological source	synthetic
JECFA Number	418
Cosmetics Ingredients Functions	PERFUMING
LogP	0.4 at 25℃
CAS DataBase Reference	80-71-7(CAS DataBase Reference)
NIST Chemistry Reference	2-Cyclopenten-1-one, 2-hydroxy-3-methyl-(80-71-7)
EPA Substance Registry System	Maple lactone (80-71-7)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38-43
Safety Statements	26-36/37-24/25-22
WGK Germany	3
RTECS	GY7298000
TSCA	TSCA listed
HS Code	29144090

Product Application of Methyl cyclopentenolone CAS#80-71-7

Methyl cyclopentenolone is used sparingly in perfume compositions often in combination with Coumarin or Coumarin derivatives. It is an excellent fortifier for such materials in Lavender fragrances, New Mown Hay, "tabac" type fragrances, spicy bases, etc. It falls naturally into Celery seed oil, Lovage, Fenugreek, Tonka, Liatris, Flouve, etc. It is, however, in flavor compositions that Methyl cyclopentenolone has found its truly extensive application.

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