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Methyl cyclopentenolone

Product Name
Methyl cyclopentenolone
CAS No.
80-71-7
Chemical Name
Methyl cyclopentenolone
Synonyms
2-Cyclopenten-1-one, 2-hydroxy-3-methyl-;CYCLOTENE;Corylon;Corylone;2-Hydroxy-3-methylcyclopent-2-en-1-one;2-HYDROXY-3-METHYL-2-CYCLOPENTENONE;2-HYDROXY-3-METHYLCYCLOPENT-2-ENONE;Cycloten;FEMA 2700;Methyl cyclopentenolone ,99%
CBNumber
CB1124237
Molecular Formula
C6H8O2
Formula Weight
112.13
MOL File
80-71-7.mol
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Methyl cyclopentenolone Property

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)
Flash point:
100°C
storage temp. 
Store at +2°C to +8°C.
solubility 
Chloroform (Slightly), Methanol (Slightly)
pka
9.21±0.20(Predicted)
color 
White crystalline powder or fine crystals
Odor
at 1.00 % in dipropylene glycol. caramel maple syrup
Odor Type
caramellic
JECFA Number
418
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)
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Safety

Hazard Codes 
Xi
Risk Statements 
36/37/38-43
Safety Statements 
26-36/37-24/25-22
WGK Germany 
3
RTECS 
GY7298000
HS Code 
29144090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Danger
Hazard statements

H302Harmful if swallowed

H317May cause an allergic skin reaction

H318Causes serious eye damage

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

Sigma-Aldrich
Product number
W270015
Product name
Methyl cyclopentenolone
Purity
anhydrous, natural, 97%, FG
Packaging
100g
Price
$85.5
Updated
2024/03/01
Sigma-Aldrich
Product number
W270008
Product name
Methyl cyclopentenolone
Purity
anhydrous, 98%, FCC, FG
Packaging
sample-k
Price
$54.6
Updated
2024/03/01
Sigma-Aldrich
Product number
W270015
Product name
Methyl cyclopentenolone
Purity
anhydrous, natural, 97%, FG
Packaging
1kg
Price
$243
Updated
2024/03/01
Sigma-Aldrich
Product number
W270008
Product name
Methyl cyclopentenolone
Purity
anhydrous, 98%, FCC, FG
Packaging
1kg
Price
$152
Updated
2024/03/01
Sigma-Aldrich
Product number
W270008
Product name
Methyl cyclopentenolone
Purity
anhydrous, 98%, FCC, FG
Packaging
5kg
Price
$524
Updated
2024/03/01
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Methyl cyclopentenolone Chemical Properties,Usage,Production

Chemical Properties

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.

Chemical Properties

Off-white solid

Occurrence

Reported to be found during the dry distillation of wood and in the corresponding tar oil. It has also been identified in fenugreek (FenaroWs Handbook of Flavor Ingredients, 1975).

Uses

Methyl Cyclopentenolone is a flavoring agent that is a white crys- talline powder. it has a nutty odor suggesting a maple-licorice aroma when diluted. it is soluble in alcohol and propylene glycol, slightly soluble in most fixed oils, and sparingly soluble in water. it is obtained by synthesis. it is also termed 3-methyl-cyclopentane-1,2-dione.

Uses

Methyl cyclopentenolone may be used as an analytical reference standard for the quantification of the analyte in commercial products using different chromatography techniques.

Preparation

By ketonic hydrolysis of the corresponding dicarboxylic ester (Arctander, 1969)

Toxicity evaluation

The acute oral LD50 value in guinea-pigs was reported as 1.4 g/kg (Dow Chemical Company, 1953) and that in rats as > 1.85 g/kg, while the acute dermal LD50 value in guinea-pigs exceeded 2 g/kg (Moreno, 1976). Methylcyclopentenolone was lethal to mice and rats at ip doses of 0.5-1 g/kg (Shugaev, 1959), and at a concentration of 7 χ 10-4 m was toxic to cultured human leucocytes (Withers, 1966).

General Description

Methyl cyclopentenolone is one of the flavor compounds of maple syrup, coffee oil and wood smoke. It is reported to be one the key aroma compounds in Wasanbon sugar, contributing to the maple-like flavor. Methyl cyclopentenolone is also one of the major volatile compound formed during the thermal degradation of glucose.

Methyl cyclopentenolone Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from Methyl cyclopentenolone manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD
Product
Methyl cyclopentenolone 80-71-7
Price
US $0.00/kg
Min. Order
1kg
Purity
95%
Supply Ability
10000kg
Release date
2023-01-14
Hebei Guanlang Biotechnology Co., Ltd.
Product
Methyl cyclopentenolone 80-71-7
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
500000kg
Release date
2023-03-07
Hebei Mojin Biotechnology Co., Ltd
Product
Methyl cyclopentenolone 80-71-7
Price
US $0.00/KG
Min. Order
1KG
Purity
99%
Supply Ability
50000KG/month
Release date
2023-08-25

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