L-Cysteine 52-90-4

L-Cysteine 52-90-4


  • Catalogue No.: 11947
  • Product Name: L-Cysteine
  • Synonyms: (R)-2-Amino-3-mercaptopropionic acid
  • CAS: 52-90-4
  • EC: 200-158-2
  • MDL: MFCD00064306
  • Formula: C3H7NO2S
  • MW: 121.16
  • ————————————————–
  • Price: USD1920/25kg
  • Price(bulk): Email Us


Standard AJI92,USP28
Assay 99.0~100.5%
Appearance white crystalline powder
pH 4.5~5.5
Specific rotation[a]D20 +8.3°~+9.5°
Chloride 0.02% max
Ammonium 0.02% max
Sulfate 0.03% max
Iron 10ppm max
Heavy metals 10ppm max
Arsenic 1ppm max
Other amino acids not detectable
Loss on drying 0.50% max
Residue on ignition 0.% max
Packing 25kg/fibre drum
Storage 2 years in seal and shading place

L-Cysteine 52-90-4 is a naturally-occurring non-essential amino acid. L-Cysteine is an activator of NMDA. Cysteine can usually be synthesized by the human body under normal physiological conditions if a sufficient quantity of methionine is available


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