5068-28-0 Alanine, 3-(benzylthio)-N-carboxy-, N-tert-butyl ester, L- L-Cysteine, N-[(1,1-dimethylethoxy)carbonyl]-S-(phenylmethyl)- N-[(1,1-Dimethylethoxy)carbonyl]-S(phenylmethyl)-L-cysteine NSC164041