英文别名3-ethyl-1-[(2-methylpropan-2-yl)oxycarbonyl]azetidine-3-carboxylic acid; 1-BOC-3-ETHYLAZETIDINE-3-CARBOXYLIC ACID; 1-BOC-3-ETHYL-3-AZETIDINECARBOXYLIC ACID; 1,3-Azetidinedicarboxylicacid,3-ethyl-,1-(1,1-dimethylethyl)ester(9CI); 1-[(tert-butoxy)carbonyl]-3-ethylazetidine-3-carboxylic acid