... acid high purity and quality of L-cysteine Hcl Anhyrous.amino acid animo acid L-cysteine HCL Anhydrous CAS NO 52-89-1Chemical ... Name L-cysteine HCL Anhydrous Molecular formula C3H7NO2S,HCL.H2OMolecular Weight 175 ... fields of medicine, food processing, biological study, materials of chemical industry and so on.It is a promotor for bread ...