(2S)-3-hydroxy-2-methylpropanoic acid

(S)-3-羟基-2-甲基丙酸

Also known as: (S)-3-Hydroxy-2-methylpropanoic acid, (S)-3-Hydroxy-2-methylpropionic acid, (S)-β-Hydroxyisobutyric acid, S-HIBA, (2S)-3-hydroxy-2-methylpropanoic acid

(2S)-3-hydroxy-2-methylpropanoic acid (CAS 26543-05-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H8O3 and a molecular weight of 104.10500 g/mol. It is also known as (S)-3-Hydroxy-2-methylpropanoic acid, (S)-3-Hydroxy-2-methylpropionic acid and (S)-β-Hydroxyisobutyric acid. Key properties include a boiling point of 252.9ºC at 760mmHg, a density of 1.195g/cm3 and a flash point of 121ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
26543-05-5
Jingsj CID
J-1520302-3
Molecular Formula
C4H8O3
Chinese Name
(S)-3-羟基-2-甲基丙酸
Molecular Weight
104.10500 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point252.9ºC at 760mmHg
Density1.195g/cm3
Flash Point121ºC

Frequently Asked Questions

What is the CAS number of (2S)-3-hydroxy-2-methylpropanoic acid?

The CAS number of (2S)-3-hydroxy-2-methylpropanoic acid is 26543-05-5.

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

(2S)-3-hydroxy-2-methylpropanoic acid has molecular formula C4H8O3 and molecular weight 104.10500 g/mol.

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

Last updated:

How to cite: Jingsj. "(2S)-3-hydroxy-2-methylpropanoic acid (CAS 26543-05-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1520302-3 (accessed 2026-10-25).

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