[(2S)-2-hydroxybutyl] 4-methylbenzenesulfonate

Also known as: (S)-2-hydroxybutyl p-tosylate, (S)-2-hydroxybutyl tosylate, (S)-2-hydroxybutyl 4-methylbenzenesulfonate, 1,2-Butanediol, 1-(4-methylbenzenesulfonate), (2S)-, S-1-(4-Methylbenzenesulfonate)-1,2-butanediol

[(2S)-2-hydroxybutyl] 4-methylbenzenesulfonate (CAS 143731-32-2) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C11H16O4S and a molecular weight of 244.30700 g/mol. Key properties include a boiling point of 390.8ºC at 760mmHg, a density of 1.213g/cm3 and a flash point of 190.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 143731-32-2
Jingsj CID: J-21789-0
Molecular Formula: C₁₁H₁₆O₄S
Molecular Weight: 244.30700 g/mol
Category: Solvents
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	390.8ºC at 760mmHg
Density	1.213g/cm3
Flash Point	190.1ºC
Exact Mass	244.07700
PSA	71.98000
LogP	2.55200
Vapor Pressure	8.3E-07mmHg at 25°C
Refractive Index	1.5165-1.5185

Frequently Asked Questions

What is the CAS number of [(2S)-2-hydroxybutyl] 4-methylbenzenesulfonate?

The CAS number of [(2S)-2-hydroxybutyl] 4-methylbenzenesulfonate is 143731-32-2.

What are the molecular formula and molecular weight of [(2S)-2-hydroxybutyl] 4-methylbenzenesulfonate?

[(2S)-2-hydroxybutyl] 4-methylbenzenesulfonate has molecular formula C11H16O4S and molecular weight 244.30700 g/mol.

What are the upstream and downstream products of [(2S)-2-hydroxybutyl] 4-methylbenzenesulfonate?

For [(2S)-2-hydroxybutyl] 4-methylbenzenesulfonate, Upstream Products: (S)-1,2-Butanediol, p-Toluenesulfonyl chloride, (R)-2-Hydroxybutyl tosylate.

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

Last updated: 8/21/2026

How to cite: Jingsj. "[(2S)-2-hydroxybutyl] 4-methylbenzenesulfonate (CAS 143731-32-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-21789-0 (accessed 2026-11-09).

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