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(S)-3-Hydroxybutyric acid

Also known as: (S)-3-Hydroxybutanoic acid, (3S)-3-hydroxybutanoic acid, (3S)-3-hydroxybutyric acid, (S)-(+)-3-Hydroxybutyric acid, L-3-Hydroxybutyric acid, L-(+)-3-Hydroxybutyric acid, (S)-β-Hydroxybutanoic acid, (S)-3-Hydroxybutyrate

(S)-3-Hydroxybutyric acid (CAS 6168-83-8) 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. Key properties include a melting point of 45-48ºC, a boiling point of 269.2ºC at 760 mmHg, a density of 1.195 g/cm3 and a flash point of 121ºC. 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.
6168-83-8
Jingsj CID
J-1969924-2
Molecular Formula
C4H8O3
Molecular Weight
104.10500 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point45-48ºC
Boiling Point269.2ºC at 760 mmHg
Density1.195 g/cm3
Flash Point121ºC
Exact Mass104.04700
PSA57.53000
Refractive Index1.455
Storage Conditions2-8°C

GHS Safety & Compliance

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

Activity & Biological Data

TargetHuman Endogenous Metabolite

Frequently Asked Questions

What is the CAS number of (S)-3-Hydroxybutyric acid?

The CAS number of (S)-3-Hydroxybutyric acid is 6168-83-8.

What are the molecular formula and molecular weight of (S)-3-Hydroxybutyric acid?

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

Is (S)-3-Hydroxybutyric acid hazardous?

(S)-3-Hydroxybutyric acid has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

What are the upstream and downstream products of (S)-3-Hydroxybutyric acid?

For (S)-3-Hydroxybutyric acid, Upstream Products: Methyl (S)-(+)-3-hydroxybutyrate, Ethyl (S)-3-hydroxybutyrate, Ethyl acetoacetate; Downstream Products: (2S,5S)-(+)-HEXANEDIOL, Methyl (S)-(+)-3-hydroxybutyrate, Crotonic acid.

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

Last updated:

How to cite: Jingsj. "(S)-3-Hydroxybutyric acid (CAS 6168-83-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1969924-2 (accessed 2026-11-09).

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