3-Methyl-1,2-cyclopentanedione

3-Methyl-1,2-cyclopentanedione Basic information
Product Name:3-Methyl-1,2-cyclopentanedione
Synonyms:3-Methyl-1,2-cyclopentadione;3-Methylcyclopenta-1,2-dione;3-Methyl-1,2-cyclopentanedione,99%;3-Methyl-1,2-cyclopentanedione, 99% 10GR;3-Methyl-1,2-cyclopentanedione, 99% 50GR;Methylcyclopentane-1,2-;3-Methyl-1,2-cyclopentanedione 99%;2-Cyclopentanedione,3-methyl-1
CAS:765-70-8
MF:C6H8O2
MW:112.13
EINECS:212-154-8
Product Categories:Indolines ,Indoles ,Indazoles
Mol File:765-70-8.mol
3-Methyl-1,2-cyclopentanedione Structure
3-Methyl-1,2-cyclopentanedione Chemical Properties
Melting point 104-108 °C(lit.)
Boiling point 170.05°C (rough estimate)
density 1.0795 (rough estimate)
FEMA 2700 | METHYLCYCLOPENTENOLONE
refractive index 1.4550 (estimate)
Fp 100 °C
storage temp. Store below +30°C.
solubility soluble in Methanol
form Powder
color White to off-white
Odorat 10.00 % in dipropylene glycol. sweet caramel maple sugar coffee woody
Odor Typecaramellic
Water Solubility soluble
λmax259nm(EtOH)(lit.)
JECFA Number418
BRN 2076520
LogP0.04
CAS DataBase Reference765-70-8(CAS DataBase Reference)
NIST Chemistry Reference1,2-Cyclopentanedione, 3-methyl-(765-70-8)
EPA Substance Registry System1,2-Cyclopentanedione, 3-methyl- (765-70-8)
Safety Information
Hazard Codes Xi
Risk Statements 36/37/38-43
Safety Statements 22-24/25-36/37-26-36
WGK Germany 3
TSCA Yes
HS Code 29142900
MSDS Information
ProviderLanguage
2-Hydroxy-3-methyl-2-cyclopenten-1-one English
SigmaAldrich English
ACROS English
ALFA English
3-Methyl-1,2-cyclopentanedione Usage And Synthesis
DescriptionMethylcyclopentenolone has a sweet flavor somewhat similar to licorice.
Chemical PropertiesMethylcyclopentenolone has a sweet flavor somewhat similar to licorice. This compound is also reported to have a nutty odor, and a maple-licorice aroma in dilute solution
Chemical PropertiesWHITE TO OFF-WHITE POWDER
OccurrenceReported formed during the dry distillation of wood; found also in the corresponding tar oil; identified in fenugreek. Also reported found in black currants, onion, wheat bread, cured and cooked pork, beer, cocoa, coffee, barley, filbert, almond, sukiyaki, licorice, dried bonito and roasted chicory root
PreparationSublimes and distills at atmospheric pressure with decomposition.
DefinitionChEBI: 3-Methyl-1,2-cyclopentanedione is a cyclic ketone.
Aroma threshold valuesDetection: 300 ppb
Taste threshold valuesTaste characteristics at 5 ppm: sweet, maple, bready, caramellic with nutty nuances.
Synthesis Reference(s)Synthesis, p. 104, 1975 DOI: 10.1055/s-1975-23673
General Description3-Methyl-1,2-cyclopentanedione is present in coffee and is capable of scavenging peroxynitrite. It also has anti-inflammatory effects.
3-Methyl-1,2-cyclopentanedione Preparation Products And Raw materials
AZINPHOS-METHYL 7-(BROMOMETHYL)-1,7-DIMETHYLBICYCLO[2.2.1]HEPTANE-2,3-DIONE 3,5-DIPHENYLCYCLOPENTANE-1,2,4-TRIONE 1,3,5(10)-ESTRATRIEN-3-OL-16,17-DIONE Bromomethylcyclopentane Tribenuron methyl 3,5-Dimethyl-1,2-cyclopentanedione 3,4-Dimethyl-1,2-cyclopentanedione (1R)-(-)-CAMPHORQUINONE 3-Methyl-1,2-cyclopentanedione DL-CAMPHORQUINONE Cyclopentane (1S)-(+)-CAMPHORQUINONE Acetone oxime 3-METHYLCYCLOPENTANE-1,2,4-TRIONE Methyl salicylate Bromocyclopentane METSULFURON METHYL

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