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2-(Cyanomethylthio)acetic acid

Also known as: (Cyanomethylthio)acetic acid, 2-(cyanomethylsulfanyl)acetic acid, Acetic acid, 2-[(cyanomethyl)thio]-, Cefmetazole side chain, [(Cyanomethyl)thio]acetic acid, MFCD08705779

2-(Cyanomethylthio)acetic acid (CAS 55817-29-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H5NO2S and a molecular weight of 131.15300 g/mol. Key properties include a boiling point of 329ºC and a density of 1.358. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed and H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
55817-29-3
Jingsj CID
J-1511277-3
Molecular Formula
C4H5NO2S
Molecular Weight
131.15300 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point329ºC
Density1.358
Exact Mass131.00400
PSA86.39000
LogP0.32778
Refractive Index1.535

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed
  • H319 — Causes serious eye irritation

Customs & Trade Information

HS Code2930909090
Summary2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of 2-(Cyanomethylthio)acetic acid?

The CAS number of 2-(Cyanomethylthio)acetic acid is 55817-29-3.

What are the molecular formula and molecular weight of 2-(Cyanomethylthio)acetic acid?

2-(Cyanomethylthio)acetic acid has molecular formula C4H5NO2S and molecular weight 131.15300 g/mol.

Is 2-(Cyanomethylthio)acetic acid hazardous?

2-(Cyanomethylthio)acetic acid has GHS signal word Warning and hazard statements H302 — Harmful if swallowed; H319 — Causes serious eye irritation.

What are the upstream and downstream products of 2-(Cyanomethylthio)acetic acid?

For 2-(Cyanomethylthio)acetic acid, Upstream Products: Chloroacetonitrile, Thioglycolic acid; Downstream Products: methyl 2-[(cyanomethyl)thio]acetate.

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

Last updated:

How to cite: Jingsj. "2-(Cyanomethylthio)acetic acid (CAS 55817-29-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1511277-3 (accessed 2026-11-09).

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