(2R)?-(2R)?-?N-?[(1,?1-?Dimethylethoxy)?carbonyl]?-?2-?phenylglycyl-?2-?phenyl-glycine Methyl Ester is an intermediate in synthesizing (3R,6R)-3,6-Diphenylpiperazine-2,5-dione (D492280), which can be utilized for self-assembly of aromatic cyclic dipeptides intonano- and mesosheets. It can also be used todevelop HPLC methods that detectcompounds or impurities related to ampicillin in bulk drug.