L-Cysteinesulfinic acid monohydrate

L-半胱氨酸亚磺酸一水合物

Also known as: L-Cysteinesulfinic Acid, Monohydrate, 3-sulfino-L-alanine hydrate, Sulfino-L-alanine hydrate, L-Cysteinesulfinic Acid (hydrate), L-Cysteinesulfinic acid Monohydrate 99%, (2R)-2-amino-3-sulfinopropanoic acid, Acetylcysteine impurity 20(monohydrate), MFCD00150732

L-Cysteinesulfinic acid monohydrate (CAS 207121-48-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C3H9NO5S and a molecular weight of 171.17200 g/mol. It is also known as L-Cysteinesulfinic Acid, Monohydrate, 3-sulfino-L-alanine hydrate and Sulfino-L-alanine hydrate. Key properties include a melting point of 163ºC (dec.)(lit.), a boiling point of 580.6ºC at 760 mmHg and a flash point of 304.9ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
207121-48-0
Jingsj CID
J-13246-6
Molecular Formula
C3H9NO5S
Chinese Name
L-半胱氨酸亚磺酸一水合物
Molecular Weight
171.17200 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point163ºC (dec.)(lit.)
Boiling Point580.6ºC at 760 mmHg
Flash Point304.9ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of L-Cysteinesulfinic acid monohydrate?

The CAS number of L-Cysteinesulfinic acid monohydrate is 207121-48-0.

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

L-Cysteinesulfinic acid monohydrate has molecular formula C3H9NO5S and molecular weight 171.17200 g/mol.

Is L-Cysteinesulfinic acid monohydrate hazardous?

L-Cysteinesulfinic acid monohydrate 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. "L-Cysteinesulfinic acid monohydrate (CAS 207121-48-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-13246-6 (accessed 2026-10-24).

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