Synonyms: 1,2-Pyrrolidinedicarboxylicacid, 4-hydroxy-, 1-(1,1-dimethylethyl) ester, (2R-cis)-;(2R,4R)-1-(tert-Butoxycarbonyl)-4-hydroxypyrrolidine-2-carboxylic acid;(2R,4R)-1-tert-Butoxycarbonyl-4-hydroxypyrrolidine-2-carboxylic acid;(2R,4R)-4-Hydroxypyrrolidine-1,2-dicarboxylic acid 1-tert-butyl ester;