1,2-Pyrrolidinedicarboxylic acid, 5-oxo-, 1,2-bis(1,1-dimethylethyl) ester, (2R)-
1,2-Pyrrolidinedicarboxylic acid, 5-oxo-, bis(1,1-dimethylethyl) ester, (R)-
1,2-Pyrrolidinedicarboxylic acid, 5-oxo-, bis(1,1-dimethylethyl) ester, (2R)-
1,2-Bis(1,1-dimethylethyl) (2R)-5-oxo-1,2-pyrrolidinedicarboxylate
(r)-n-Boc-pyroglutamic acid tert-butyl ester