(S)-2-Amino-3-hydroxy-propionic acid 2-(4-bromo-phenyl)-2-oxo-ethyl ester; hydrobromide

(R)-3-Benzyloxy-2-(2,3-bis-benzyloxy-benzoylamino)-propionic acid (S)-2-(2,3-bis-benzyloxy-benzoylamino)-2-[2-(4-bromo-phenyl)-2-oxo-ethoxycarbonyl]-ethyl ester

(S)-2-(2,3-Bis-benzyloxy-benzoylamino)-3-hydroxy-propionic acid 2-(4-bromo-phenyl)-2-oxo-ethyl ester

(S)-3-Benzyloxy-2-(2,3-bis-benzyloxy-benzoylamino)-propionic acid (S)-2-(2,3-bis-benzyloxy-benzoylamino)-2-[2-(4-bromo-phenyl)-2-oxo-ethoxycarbonyl]-ethyl ester