L-CYSTEIC ACID MONOHYDRATE

Product Name:

L-CYSTEIC ACID MONOHYDRATE

Synonyms:

3-Sulfo-L-alanine Monohydrate;H-Cys(O)2-OH.H2O;L-CYSTEIC ACID MONOHYDRATE >= 99.0%;(R)-2-AMINO-3-SULFOPROPIONIC ACID;L-CYSTEIC ACID MONOHYDRATE;L-2-AMINO-3-SULFOPROPIONIC ACID MONOHYDRATE;H-CYSTEIC-ACID-OH H2O;BETA-SULFO-L-ALANINE MONOHYDRATE

CAS:

MF:

C3H9NO6S

MW:

187.17

EINECS:

207-861-3

Product Categories:

Metabolites & Impurities;Pharmaceuticals;Amines;Chiral Reagents;Intermediates & Fine Chemicals

Mol File:

23537-25-9.mol

 

L-CYSTEIC ACID MONOHYDRATE Chemical Properties

Melting point 

267 °C (dec.)(lit.)

solubility 

H2O: soluble

optical activity

[α]20/D +7.5±0.5°, c = 5% in H2O

Water Solubility 

Soluble in water.

Merck 

14,2780

BRN 

1725495

Stability:

Stable. Combustible.

InChIKey

PCPIXZZGBZWHJO-DKWTVANSSA-N

CAS DataBase Reference

23537-25-9(CAS DataBase Reference)

 

Safety Information

Safety Statements 

22-24/25

WGK Germany 

3

HS Code 

29379000

MSDS Information

 

L-CYSTEIC ACID MONOHYDRATE Usage And Synthesis

Chemical Properties

white powder

Uses

A major metabolite of non-essential amino acid L-Cysteine.

Purification Methods

Likely impurities are cystine and oxides of cysteine. Crystallise it from water by adding 2 volumes of EtOH. When recrystallised from aqueous MeOH it has m 264-266o, and the anhydrous acid has m ~260o(dec). [Chapeville & Formageot Biochim Biophys Acta 26 538 1957, Riordan & Giese Methods Enzymol 47 31 1977, Beilstein 4 IV 3296.]