英文别名3-Ethoxycarbonylmethylene-azetidine-1-carboxylic acid tert-butyl ester; 1-Boc-3-ethoxycarbonylMethylene-azetidine; 3-Ethoxycarbonylmethylene-azetidine-1-carboxylic acid tert-butyl este; 1-Azetidinecarboxylic acid, 3-(2-ethoxy-2-oxoethylidene)-, 1,1-dimethylethyl ester; Ethyl 2-(1-Boc-azetidin-3-ylidene)acetate; 1-(tert-Butoxycarbonyl)-3-(2-ethoxy-2-oxoethylidene)azetidine; 1-Boc-3-(2-ethoxy-2-oxoethylidene)azetidine; tertbutylethoxyoxoethylideneazetidinecarboxylate 
