L-Cysteinesulfinic acid

L-半胱氨酸亚磺酸

Also known as: 3-Sulfino-L-alanine, 3-sulphino-L-alanine, L-cysteine sulphinic acid, (2R)-2-amino-3-sulfinopropanoic acid, 2-amino-3-sulfinopropionic acid, Cysteinesulfinic acid, Cysteine sulphinic acid, CYSTEINE(L) SULFINIC ACID, Carbocysteine Impurity 5

L-Cysteinesulfinic acid (CAS 1115-65-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C3H7NO4S and a molecular weight of 153.16 g/mol. It is also known as 3-Sulfino-L-alanine, 3-sulphino-L-alanine and L-cysteine sulphinic acid. Key properties include a melting point of >130°C (dec.) (lit.), a boiling point of 492.8ºC at 760mmHg, a density of 1.828g/cm3 and a flash point of 251.8ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
1115-65-7
Jingsj CID
J-28075-2
Molecular Formula
C3H7NO4S
Chinese Name
L-半胱氨酸亚磺酸
Molecular Weight
153.16 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point>130°C (dec.) (lit.)
Boiling Point492.8ºC at 760mmHg
Density1.828g/cm3
Flash Point251.8ºC

Frequently Asked Questions

What is the CAS number of L-Cysteinesulfinic acid?

The CAS number of L-Cysteinesulfinic acid is 1115-65-7.

What are the molecular formula and molecular weight of L-Cysteinesulfinic acid?

L-Cysteinesulfinic acid has molecular formula C3H7NO4S and molecular weight 153.16 g/mol.

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

Last updated:

How to cite: Jingsj. "L-Cysteinesulfinic acid (CAS 1115-65-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-28075-2 (accessed 2026-10-22).

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