(4R)-BOC-4-(2-BROMBENZYL)-PYR-OBZL

(4r)-boc-4-(2-bromobenzyl)-l-pyroglutamic acid benzyl ester

(4R)-Boc-4-(2-bromobenzyl)-L-pyroglutamic acid benzyl ester, Benzyl (2S,4R)-1-Boc-4-(2-bromobenzyl)-5-oxo-2-pyrrolidinecarboxylate