2-methyl-4-oxopentanoic acid

Also known as: alpha-methyllevulinic acid, 2-methyl-4-oxovaleric acid, 4-oxo-2-methylpentanoic acid, NSC15757, α-methyllevulinic acid

2-methyl-4-oxopentanoic acid (CAS 6641-83-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H10O3 and a molecular weight of 130.14200 g/mol. Key properties include a boiling point of 165ºC / 40mmHg, a density of 1.09 g/cm3 and a flash point of 116.5ºC. No supplier offers are currently listed; request a quote. Record last updated Nov 3, 2026.

CAS No.: 6641-83-4
Jingsj CID: J-4728-9
Molecular Formula: C₆H₁₀O₃
Molecular Weight: 130.14200 g/mol
Category: Organic Acids
Last updated: 11/3/2026

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Physicochemical Properties

Boiling Point	165ºC / 40mmHg
Density	1.09 g/cm3
Flash Point	116.5ºC
Exact Mass	130.06300
PSA	54.37000
LogP	0.68620
Refractive Index	1.437

Customs & Trade Information

HS Code	2918300090
Summary	2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-methyl-4-oxopentanoic acid?

The CAS number of 2-methyl-4-oxopentanoic acid is 6641-83-4.

What are the molecular formula and molecular weight of 2-methyl-4-oxopentanoic acid?

2-methyl-4-oxopentanoic acid has molecular formula C6H10O3 and molecular weight 130.14200 g/mol.

What are the upstream and downstream products of 2-methyl-4-oxopentanoic acid?

For 2-methyl-4-oxopentanoic acid, Upstream Products: Carbon dioxide, 2,5-Dimethyl-3-hexyne-2,5-diol; Downstream Products: 2-Methylpentanoic acid, 2,4-Dimethylthiophene, 2-Methylsuccinic acid.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 11/3/2026

How to cite: Jingsj. "2-methyl-4-oxopentanoic acid (CAS 6641-83-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4728-9 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.