(S-(R*,S*))-N-(2-(Mercaptomethyl)-1-oxo-3-phenylbutyl)-L-alanine 155895-89-9 L-Alanine, N-(2-(mercaptomethyl)-1-oxo-3-phenylbutyl)-, (S-(R*,S*))- N-(2-(Mercaptomethyl)-3-phenylbutanoyl)-L-alanine RB 105 RB-105