3-[(5-Mercapto-1,3,4-thiadiazol-2-yl)thio]propanoic acid

3-(5-巯基-1,3,4-噻二唑-2-硫基)丙酸

Also known as: 3-(5-Mercapto-1,3,4-thiadiazol-2-ylthio)propionic acid, 3-[(5-Sulfanyl-1,3,4-thiadiazol-2-yl)sulfanyl]propanoic acid, Propanoic acid, 3-[(4,5-dihydro-5-thioxo-1,3,4-thiadiazol-2-yl)thio]-, 3-(5-Thioxo-4,5-dihydro-[1,3,4]thiadiazol-2-ylmercapto)-propionic acid, 3-[(2-Sulfanylidene-3H-1,3,4-thiadiazol-5-yl)sulfanyl]propanoic acid, 5-Thioxo-2-(2-carboxy-ethylmercapto)-1,3,4-thiadiazoline

3-[(5-Mercapto-1,3,4-thiadiazol-2-yl)thio]propanoic acid (CAS 57658-21-6) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H6N2O2S3 and a molecular weight of 222.30800 g/mol. It is also known as 3-(5-Mercapto-1,3,4-thiadiazol-2-ylthio)propionic acid, 3-[(5-Sulfanyl-1,3,4-thiadiazol-2-yl)sulfanyl]propanoic acid and Propanoic acid, 3-[(4,5-dihydro-5-thioxo-1,3,4-thiadiazol-2-yl)thio]-. Key properties include a boiling point of 400.6ºC at 760 mmHg, a density of 1.76g/cm3 and a flash point of 196.1ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
57658-21-6
Jingsj CID
J-874688-1
Molecular Formula
C5H6N2O2S3
Chinese Name
3-(5-巯基-1,3,4-噻二唑-2-硫基)丙酸
Molecular Weight
222.30800 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point400.6ºC at 760 mmHg
Density1.76g/cm3
Flash Point196.1ºC

Frequently Asked Questions

What is the CAS number of 3-[(5-Mercapto-1,3,4-thiadiazol-2-yl)thio]propanoic acid?

The CAS number of 3-[(5-Mercapto-1,3,4-thiadiazol-2-yl)thio]propanoic acid is 57658-21-6.

What are the molecular formula and molecular weight of 3-[(5-Mercapto-1,3,4-thiadiazol-2-yl)thio]propanoic acid?

3-[(5-Mercapto-1,3,4-thiadiazol-2-yl)thio]propanoic acid has molecular formula C5H6N2O2S3 and molecular weight 222.30800 g/mol.

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

Last updated:

How to cite: Jingsj. "3-[(5-Mercapto-1,3,4-thiadiazol-2-yl)thio]propanoic acid (CAS 57658-21-6)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-874688-1 (accessed 2026-10-25).

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