Welcome to LookChem.com Sign In|Join Free

CAS

  • or

80-71-7

Post Buying Request

80-71-7 Suppliers

Recommended suppliersmore

  • Product
  • FOB Price
  • Min.Order
  • Supply Ability
  • Supplier
  • Contact Supplier

80-71-7 Usage

Chemical Properties

Different sources of media describe the Chemical Properties of 80-71-7 differently. You can refer to the following data:
1. 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.
2. 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

Different sources of media describe the Uses of 80-71-7 differently. You can refer to the following data:
1. 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.
2. 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.

Check Digit Verification of cas no

The CAS Registry Mumber 80-71-7 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 0 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 80-71:
(4*8)+(3*0)+(2*7)+(1*1)=47
47 % 10 = 7
So 80-71-7 is a valid CAS Registry Number.
InChI:InChI=1/C6H8O2/c1-4-2-3-5(7)6(4)8/h4H,2-3H2,1H3/t4-/m1/s1

80-71-7 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
  • Packaging
  • Price
  • Detail
  • Sigma-Aldrich

  • (80133)  Methylcyclopentenolone  analytical standard

  • 80-71-7

  • 80133-100MG

  • 1,628.64CNY

  • Detail

80-71-7SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-Hydroxy-3-methyl-2-cyclopentenone

1.2 Other means of identification

Product number -
Other names 2-Cyclopenten-1-one, 2-hydroxy-3-methyl-

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only. Food additives -> Flavoring Agents
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:80-71-7 SDS

80-71-7Relevant articles and documents

Shiozaki,Hiraoka

, p. 4655 (1972)

Prostaglandins VI base-catalysed autoxidation of α-hydroxycyclopentanonesand the synthesis of 9,10-diketoprostanoic acids

Caton,Darnbrough,Parker

, p. 1685 - 1686 (1980)

-

Synthetic method of methyl cyclopentenolone

-

, (2021/01/15)

The invention relates to a preparation method of methyl cyclopentenolone, which comprises the following steps: (1) controlling the pH value and temperature of a reaction system, and reacting a dimethylamine hydrochloride, a formaldehyde aqueous solution and 2-methyl furan to generate N, N-dimethyl-5-methyl furfuryl amine; (2) when it is monitored that the content of the 2-methyl furan is not reduced any more, adjusting the pH value of the reaction solution to be less than 1 by using an acid solution, and reacting to obtain a product 1-dimethyl amino-2, 5-hexanedione; and (3) adjusting the pH value of the reaction solution to 12-13 by using an alkali, reacting, extracting the reaction solution, concentrating to recover the solvent, and rectifying to obtain a product 2-(dimethylamino)-3-methyl-2-cyclopentene-1-one; and (4) mixing 2-(dimethylamino)-3-methyl-2-cyclopentene-1-one with hydrochloric acid, reacting, hydrolyzing, crystallizing and purifying to obtain methyl cyclopentenolone, and concentrating and recycling a reaction mother liquor Compared with the prior art, the method has the advantages that remote and automatic operation is facilitated, wastewater treatment is reduced, and the raw material dimethylamine hydrochloride can be reused.

Cyclopentanone Derivatives from 5-Hydroxymethylfurfural via 1-Hydroxyhexane-2,5-dione as Intermediate

Wozniak, Bartosz,Spannenberg, Anke,Li, Yuehui,Hinze, Sandra,de Vries, Johannes G.

, p. 356 - 359 (2018/01/03)

An efficient strategy for the conversion of biomass derived 5-hydroxymethylfurfural (HMF) into 2-hydroxy-3-methylcyclopent-2-enone (MCP) by an intramolecular aldol condensation of 1-hydroxyhexane-2,5-dione (HHD) has been developed. Further transformations of MCP towards the diol, enol acetate, levulinic acid and N-heterocyclic compounds are also reported.

Post a RFQ

Enter 15 to 2000 letters.Word count: 0 letters

Attach files(File Format: Jpeg, Jpg, Gif, Png, PDF, PPT, Zip, Rar,Word or Excel Maximum File Size: 3MB)

1

What can I do for you?
Get Best Price

Get Best Price for 80-71-7