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[(2S)-2-Hydroxybut-3-enyl] 4-methylbenzenesulfonate

Also known as: (S)-2-Hydroxy-3-buten-1-yl p-tosylate, (S)-2-Hydroxy-3-butenyl tosylate, (S)-3-Butene-1,2-diol 1-tosylate, (S)-3-Butene-1,2-diol 1-(p-toluenesulfonate), [(2S)-2-hydroxybut-3-enyl] 4-methylbenzenesulfonate

[(2S)-2-Hydroxybut-3-enyl] 4-methylbenzenesulfonate (CAS 133095-74-6) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C11H14O4S and a molecular weight of 242.29100 g/mol. Key properties include a melting point of 58-63ºC, a boiling point of 398.3ºC at 760 mmHg, a density of 1.234 g/cm3 and a flash point of 194.7ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
133095-74-6
Jingsj CID
J-1169788-4
Molecular Formula
C11H14O4S
Molecular Weight
242.29100 g/mol
Category
Solvents
Last updated
8/21/2026
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Physicochemical Properties

Melting Point58-63ºC
Boiling Point398.3ºC at 760 mmHg
Density1.234 g/cm3
Flash Point194.7ºC
Exact Mass242.06100
PSA71.98000
LogP2.32800
Vapor Pressure4.65E-07mmHg at 25°C
Refractive Index1.541

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Frequently Asked Questions

What is the CAS number of [(2S)-2-Hydroxybut-3-enyl] 4-methylbenzenesulfonate?

The CAS number of [(2S)-2-Hydroxybut-3-enyl] 4-methylbenzenesulfonate is 133095-74-6.

What are the molecular formula and molecular weight of [(2S)-2-Hydroxybut-3-enyl] 4-methylbenzenesulfonate?

[(2S)-2-Hydroxybut-3-enyl] 4-methylbenzenesulfonate has molecular formula C11H14O4S and molecular weight 242.29100 g/mol.

Is [(2S)-2-Hydroxybut-3-enyl] 4-methylbenzenesulfonate hazardous?

[(2S)-2-Hydroxybut-3-enyl] 4-methylbenzenesulfonate has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

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

Last updated:

How to cite: Jingsj. "[(2S)-2-Hydroxybut-3-enyl] 4-methylbenzenesulfonate (CAS 133095-74-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1169788-4 (accessed 2026-11-09).

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