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4-Cyano-3-oxotetrahydrothiophene

4-氰基-3-四氢噻吩酮

Also known as: 4-Cyano-3-tetrahydrothiophenone, 4-Oxotetrahydrothiophene-3-carbonitrile, 4-oxothiolane-3-carbonitrile, 4-Cyanotetrahydro-3-thiophenone, Nsc298357

4-Cyano-3-oxotetrahydrothiophene (CAS 16563-14-7) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C5H5NOS and a molecular weight of 127.16400 g/mol. It is also known as 4-Cyano-3-tetrahydrothiophenone, 4-Oxotetrahydrothiophene-3-carbonitrile and 4-oxothiolane-3-carbonitrile. Key properties include a melting point of 71ºC, a boiling point of 125ºC / 1mmHg, a density of 1.29g/cm3 and a flash point of 141.4ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
16563-14-7
Jingsj CID
J-4641-5
Molecular Formula
C5H5NOS
Chinese Name
4-氰基-3-四氢噻吩酮
Molecular Weight
127.16400 g/mol
Category
Pharma Intermediates
Last updated
8/21/2026

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Physicochemical Properties

Melting Point71ºC
Boiling Point125ºC / 1mmHg
Density1.29g/cm3
Flash Point141.4ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of 4-Cyano-3-oxotetrahydrothiophene?

The CAS number of 4-Cyano-3-oxotetrahydrothiophene is 16563-14-7.

What are the molecular formula and molecular weight of 4-Cyano-3-oxotetrahydrothiophene?

4-Cyano-3-oxotetrahydrothiophene has molecular formula C5H5NOS and molecular weight 127.16400 g/mol.

Is 4-Cyano-3-oxotetrahydrothiophene hazardous?

4-Cyano-3-oxotetrahydrothiophene has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "4-Cyano-3-oxotetrahydrothiophene (CAS 16563-14-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-4641-5 (accessed 2026-10-23).

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