3-Methyl-1,2-cyclopentanedione

Application

Product Name: 3-Methyl-1,2-cyclopentanedione
CAS No.: 765-70-8
Chemical Name: 3-Methyl-1,2-cyclopentanedione
Synonyms: MCP;1,2-Cyclopentanedione, 3-methyl-;MAPLE LACTONE;2-HYDROXY-3-METHYL-2-CYCLOPENTEN-1-ONE;3-METHYLCYCLOPENTANE-1,2-DIONE;2-HYDROXY-3-METHYL-2-CYCLOPENTENONE;FEMA 2700;3-Methylcyclopenta-1,2-dione;3-Methyl-1,2-cyclopentadione;2-Cyclopentanedione,3-methyl-1
CBNumber: CB6378985
Molecular Formula: C6H8O2
Formula Weight: 112.13
MOL File: 765-70-8.mol

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3-Methyl-1,2-cyclopentanedione Property

Melting point:: 104-108 °C(lit.)
Boiling point:: 170.05°C (rough estimate)
Density: 1.0795 (rough estimate)
refractive index: 1.4550 (estimate)
FEMA: 2700 | METHYLCYCLOPENTENOLONE
Flash point:: 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)

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Safety

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

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements

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

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: 178500
Product name: 3-Methyl-1,2-cyclopentanedione
Purity: 99%
Packaging: 10g
Price: $52.25
Updated: 2025/07/31

TCI Chemical

Product number: M2904
Product name: 3-Methyl-1,2-cyclopentanedione
Purity: >98.0%(GC)(T)
Packaging: 25g
Price: $38
Updated: 2025/07/31

TRC

Product number: B495083
Product name: 3-Methylcyclopentane-1,2-dione
Packaging: 250mg
Price: $45
Updated: 2021/12/16

Matrix Scientific

Product number: 127515
Product name: 3-Methylcyclopentane-1,2-dione
Purity: >95%
Packaging: 10g
Price: $36
Updated: 2021/12/16

Chem-Impex

Product number: 34625
Product name: Methylcyclopentenolone,99-100%(GC),Natural,meetsFGspecifications,Kosher,FEMA2
Purity: 99-100%(GC)
Packaging: 25G
Price: $46.59
Updated: 2021/12/16

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3-Methyl-1,2-cyclopentanedione Chemical Properties,Usage,Production

Application

3-Methylcyclopentane-1,2-dione, also known as methylcyclopentenolone, is an important food flavoring agent with a prominent sweet maple-like aroma, hence the name maple lactone. Due to its caramel-like sweet aroma and nutty aroma, it has a wide range of uses. It can be used in various flavorings such as coffee, cocoa, chocolate, and nuts, and is also widely used in tobacco flavorings, detergents, and cosmetics. It can also be directly applied to foods such as bread and pastries.

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

Preparation

Sublimes and distills at atmospheric pressure with decomposition.

Definition

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

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.

Synthesis

65313-46-4

765-70-8

1-Hydroxy-2,5-hexanedione (130 mg) was used as starting material and dissolved in water at 80 °C. Sodium bicarbonate (8.4 mg) was added as a catalyst and the reaction lasted for 12 hours. Upon completion of the reaction, extraction was carried out using chloroform to isolate the product. Purification by silica gel column chromatography afforded 3-methylcyclopentane-1,2-dione (91 mg) in 81% yield. The final product was analyzed by GC-MS and confirmed by comparison with 3-methylcyclopentane-1,2-dione standard.

References

[1] Patent: CN108129278, 2018, A. Location in patent: Paragraph 0018-0025

3-Methyl-1,2-cyclopentanedione Preparation Products And Raw materials

Raw materials

Preparation Products

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3-Methyl-1,2-cyclopentanedione Suppliers

Americas 2 Australia 1 Belgium 3 Canada 1 China 133 Europe 4 France 1 Germany 5 India 7 Ireland 1 Italy 1 Japan 2 Mexico 1 Spain 2 Switzerland 2 Ukraine 1 United Kingdom 7 United States 34 Global 208

J & K SCIENTIFIC LTD.

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Alfa Aesar

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Energy Chemical

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Sinopharm Chemical Reagent Co,Ltd.

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Spectrum Chemical Manufacturing Corp.

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View Lastest Price from 3-Methyl-1,2-cyclopentanedione manufacturers

Hebei Chuanghai Biotechnology Co., Ltd

Product: 3-Methyl-1,2-cyclopentanedione 765-70-8
Price: US $0.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 500000kg
Release date: 2024-10-28

Hebei Yanxi Chemical Co., Ltd.

Product: 3-Methyl-1,2-cyclopentanedione 765-70-8
Price: US $65.00-10.00/kg
Min. Order: 1kg
Purity: 0.99
Supply Ability: 20 tons
Release date: 2023-09-15

Career Henan Chemical Co

Product: 3-Methyl-1,2-cyclopentanedione 765-70-8
Price: US $1.00/KG
Min. Order: 1KG
Purity: 99%
Supply Ability: 10000kgs
Release date: 2020-01-02

765-70-8, 3-Methyl-1,2-cyclopentanedioneRelated Search:

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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

opentane-1,2-dione

3-methyl-2-cyclopentanedione

MCP

MAPLE LACTONE

FEMA 2700

3-METHYL-1,2-CYCLOPENTANEDIONE

3-METHYLCYCLOPENTANE-1,2-DIONE

METHYL CYCLOPENTENALONE

2-HYDROXY-3-METHYL-2-CYCLOPENTEN-1-ONE

2-HYDROXY-3-METHYL-2-CYCLOPENTENONE

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

765-70-8 3-Methyl-1,2-cyclopentanedione

3-Methyl cyclopenten-1,2-dione

765-70-8

Ketones

Organic Building Blocks

C3 to C6

Carbonyl Compounds

Building Blocks

Indolines ,Indoles ,Indazoles