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L-CYSTEIC ACID MONOHYDRATE

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L-CYSTEIC ACID MONOHYDRATE Basic information

Product Name:
L-CYSTEIC ACID MONOHYDRATE
Synonyms:
  • 2-Amino-3-sulfopropionicacidmonohydrate
  • L-Cysteicacidmonohydrate,99%
  • L-CYSTEIC ACID 1-HYDRATE
  • CYSTEIC ACID, L-(RG)
  • L-Alanine,3-sulfo-,monohydrate
  • L-Cysteic acid monohydrate,(R)-2-Amino-3-sulfopropionic acid
  • (R)-2-Amino-3-sulfopropanoic acid hydrate
  • 2-amino-3-sulfopropanoic acid hydrate
CAS:
23537-25-9
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
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L-CYSTEIC ACID MONOHYDRATE Chemical Properties

Melting point:
267 °C (dec.)(lit.)
storage temp. 
Room Temperature
solubility 
H2O: soluble
form 
Solid
color 
White to Off-White
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)
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Safety Information

Safety Statements 
22-24/25
WGK Germany 
3
HS Code 
29379000

MSDS

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L-CYSTEIC ACID MONOHYDRATE Usage And Synthesis

Chemical Properties

white powder

Uses

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

Uses

Internal standard for amino acid analysis.

Biochem/physiol Actions

L-cysteic acid is an oxidation product of L-cysteine. L-Cysteic acid, an analogue of cysteine sulfinic acid, may be used in studies of excitatory amino acids in the brain, such as those that bind to cysteine sulfinic acid receptors. L-Cysteic acid is a useful agonist at several rat metabotropic glutamate receptors (mGluRs).

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.]

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