L-Cystine Base,L-Cysteine,L-Cysteine Hydrochloride Monohydrate,L-Cysteine Hydrochloride Anhydrous, S-Carboxymethyl-L-Cysteine,N-Acetyl-L-Cysteine,L-Tyrosine,L-leucine,L-Arginine Monohydrochloride,L-Methionine,L-Tryptophan,L-Valine ,ammonium bicarbonate and so on.