Methyl (2S)-3-hydroxy-2-methylpropanoate

(S)-(+)-3-羟基-2-甲基丙酸甲酯

Also known as: (S)-Roche ester, Methyl (S)-(+)-3-hydroxy-2-methylpropionate, (S)-Methyl 3-hydroxy-2-methylpropanoate, Methyl (S)-3-hydroxy-2-methylpropanoate, Methyl (S)-3-hydroxy-2-methylpropionate, Methyl (S)-3-hydroxyisobutanoate, Methyl (S)-β-hydroxyisobutyrate, (S)-(+)-3-Hydroxyisobutyric acid methyl ester, Methyl (2S)-3-hydroxy-2-methylpropanoate, Propanoic acid, 3-hydroxy-2-methyl-, methyl ester, (2S)-

Methyl (2S)-3-hydroxy-2-methylpropanoate (CAS 80657-57-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H10O3 and a molecular weight of 118.131 g/mol. It is also known as (S)-Roche ester, Methyl (S)-(+)-3-hydroxy-2-methylpropionate and (S)-Methyl 3-hydroxy-2-methylpropanoate. Key properties include a boiling point of 175.0±0.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 81.1±0.0 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
80657-57-4
Jingsj CID
J-47100-2
Molecular Formula
C5H10O3
Chinese Name
(S)-(+)-3-羟基-2-甲基丙酸甲酯
Molecular Weight
118.131 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point175.0±0.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point81.1±0.0 °C

Frequently Asked Questions

What is the CAS number of Methyl (2S)-3-hydroxy-2-methylpropanoate?

The CAS number of Methyl (2S)-3-hydroxy-2-methylpropanoate is 80657-57-4.

What are the molecular formula and molecular weight of Methyl (2S)-3-hydroxy-2-methylpropanoate?

Methyl (2S)-3-hydroxy-2-methylpropanoate has molecular formula C5H10O3 and molecular weight 118.131 g/mol.

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

Last updated:

How to cite: Jingsj. "Methyl (2S)-3-hydroxy-2-methylpropanoate (CAS 80657-57-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-47100-2 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.