Synonyms: 1,2-Pyrrolidinedicarboxylicacid, 4-hydroxy-, 1-(1,1-dimethylethyl) 2-methyl ester, hydrochloride,(2S-trans)- (9CI);1-tert-Butyl 2-Methyl (2S,4R)-4-hydroxypyrrolidine-1,2-dicarboxy hydrochloride;O1-tert-butyl O2-methyl (2S,4R)-4-hydroxypyrrolidine-1,2-dicarboxylate hydrochloride;