Top Food Grade Amino Acid N-Acetyl-L-Cystein Powder CAS 52-90-4 Base L Cysteine
L-cysteine, an amino acid commonly found in living organisms. One of the α -amino acids, purple in response to nitroprusside (colored by SH), present in many proteins, glutathione, and with Metal ions such as Ag+, Hg+, Cu+ can form insoluble mercaptide.