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Substance Name: Cysteine hydrochloride (anhydrous)
RN: 52-89-1
UNII: A9U1687S1S
InChIKey: IFQSXNOEEPCSLW-DKWTVANSSA-N

Note

  • A thiol-containing non-essential amino acid that is oxidized to form CYSTINE.

Classification Codes

  • Drug / Therapeutic Agent
  • Mutation Data

Molecular Formula

  • C3-H7-N-O2-S.Cl-H

Molecular Weight

  • 157.6202
 
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Names and Synonyms

Name of Substance

  • Cysteine hydrochloride (anhydrous)

Synonyms

  • (R)-Cysteine hydrochloride
  • 3-Mercaptoalanine hydrochloride
  • AI3-18781
  • CCRIS 3613
  • Cystein chloride
  • Cysteine chlorhydrate
  • Cysteine HCl (anhydrous)
  • Cysteine hydrochloride
  • Cysteine monohydrochloride
  • Cysteine, L-, monohydrochloride
  • EC 200-157-7
  • EINECS 200-157-7
  • EK 2367
  • L-(+)-Cysteine hydrochloride
  • L-Cysteine hydrochloride
  • L-Cysteine monohydrochloride
  • NSC 8746
  • UNII-A9U1687S1S
  • WR 348

Systematic Names

  • Cysteine hydrochloride
  • L-Cysteine, hydrochloride
  • L-Cysteine, hydrochloride (1:1)

Superlist Names

  • Cysteine, L-, hydrochloride
  • L-2-Amino-3-mercaptopropanoic acid monohydrochloride
  • L-Cysteine monohydrochloride

Registry Numbers

CAS Registry Number

  • 52-89-1

FDA UNII

  • A9U1687S1S

Other Registry Numbers

  • 122641-75-2
  • 122882-13-7
  • 124558-06-1
  • 29844-56-2

System Generated Number

  • 0000052891

Molecular Formulas

Molecular Formula

  • C3-H7-N-O2-S.Cl-H

Molecular Formula Fragments

  • C3-H7-N-O2-S
  • Cl-H
  • COMPONENT

Structure Descriptors

InChI

1S/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,(H,5,6);1H/t2-;/m0./s1

InChIKey

IFQSXNOEEPCSLW-DKWTVANSSA-N

Smiles

C([C@@H](C(=O)O)N)S.Cl

Toxicity

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 1250mg/kg (1250mg/kg)   National Technical Information Service. Vol. AD691-490,
mouse LD50 intravenous 771mg/kg (771mg/kg)   Japanese Journal of Antibiotics. Vol. 38, Pg. 137, 1985.
mouse LD50 unreported 3gm/kg (3000mg/kg)   British Journal of Cancer. Vol. 6, Pg. 160, 1952.