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ChemicalBook--->CAS DataBase List--->765-70-8

765-70-8

765-70-8 Structure

765-70-8 Structure
IdentificationMore
[Name]

3-Methyl-1,2-cyclopentanedione
[CAS]

765-70-8
[Synonyms]

2-HYDROXY-3-METHYL-2-CYCLOPENTEN-1-ONE
2-HYDROXY-3-METHYL-2-CYCLOPENTENONE
3-METHYL-1,2-CYCLOPENTANEDIONE
3-METHYLCYCLOPENTANE-1,2-DIONE
FEMA 2700
MAPLE LACTONE
MCP
METHYL CYCLOPENTENALONE
METHYL CYCLOPENTENOLONE
2-Cyclopentanedione,3-methyl-1
3-methyl-2-cyclopentanedione
3-METHYL-1,2-CYCLOPENTANEDIONE ANHYDROUS
METHYL CYCLOPENTENOLONE 99+% FCC
3-Methylcyclopentane-1,2-dione, 98+%
1,2-Cyclopentanedione, 3-methyl-
Methyl cyclopentenlone
METHYLCYCLOPENTENOLLONE
3-METHYL-1,2-CYCLOPENTANEDIONE (MAPLE LACTONE)
2-Hydroxy-3-methyl-2-cyclopenten-1-one, 3-Methyl-1,2-cyclopentanedione, Maple lactone
2-Hydroxy-3-methyl-2-cyclopenten-1-one, Maple lactone
[EINECS(EC#)]

212-154-8
[Molecular Formula]

C6H8O2
[MDL Number]

MFCD00001417
[Molecular Weight]

112.13
[MOL File]

765-70-8.mol
Chemical PropertiesBack Directory
[Appearance]

WHITE TO OFF-WHITE POWDER
[Melting point ]

104-108 °C(lit.)
[Boiling point ]

170.05°C (rough estimate)
[density ]

1.0795 (rough estimate)
[FEMA ]

2700
[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
[Odor]

at 10.00 % in dipropylene glycol. sweet caramel maple sugar coffee woody
[Odor Type]

caramellic
[Water Solubility ]

soluble
[λmax]

259nm(EtOH)(lit.)
[JECFA Number]

418
[BRN ]

2076520
[LogP]

0.04
[CAS DataBase Reference]

765-70-8(CAS DataBase Reference)
[NIST Chemistry Reference]

1,2-Cyclopentanedione, 3-methyl-(765-70-8)
[EPA Substance Registry System]

1,2-Cyclopentanedione, 3-methyl- (765-70-8)
Safety DataBack Directory
[Hazard Codes ]

Xi
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
R43:May cause sensitization by skin contact.
[Safety Statements ]

S22:Do not breathe dust .
S24/25:Avoid contact with skin and eyes .
S36/37:Wear suitable protective clothing and gloves .
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
[WGK Germany ]

3
[TSCA ]

Yes
[HS Code ]

29142900
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

2-Hydroxy-3-methyl-2-cyclopenten-1-one(765-70-8).msds
Hazard InformationBack Directory
[Description]

Methylcyclopentenolone has a sweet flavor somewhat similar to licorice.
[Chemical Properties]

Methylcyclopentenolone 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 Properties]

WHITE TO OFF-WHITE POWDER
[Occurrence]

Reported 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
[Definition]

ChEBI: 3-Methyl-1,2-cyclopentanedione is a cyclic ketone.
[Preparation]

Sublimes and distills at atmospheric pressure with decomposition.
[Aroma threshold values]

Detection: 300 ppb
[Taste threshold values]

Taste 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 Description]

3-Methyl-1,2-cyclopentanedione is present in coffee and is capable of scavenging peroxynitrite. It also has anti-inflammatory effects.
Spectrum DetailBack Directory
[Spectrum Detail]

3-Methyl-1,2-cyclopentanedione(765-70-8)MS
3-Methyl-1,2-cyclopentanedione(765-70-8)1HNMR
3-Methyl-1,2-cyclopentanedione(765-70-8)13CNMR
3-Methyl-1,2-cyclopentanedione(765-70-8)IR1
3-Methyl-1,2-cyclopentanedione(765-70-8)IR2
3-Methyl-1,2-cyclopentanedione(765-70-8)IR3
3-Methyl-1,2-cyclopentanedione(765-70-8)Raman
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

3-Methyl-1,2-cyclopentanedione, 99%(765-70-8)
[Alfa Aesar]

3-Methylcyclopentane-1,2-dione, 98+%(765-70-8)
[Sigma Aldrich]

765-70-8(sigmaaldrich)
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