英文别名1-Boc-3-MethoxycarbonylMethylene-azetidine; 1-Azetidinecarboxylic acid, 3-(2-methoxy-2-oxoethylidene)-, 1,1-dimethylethyl ester; 1,3-Azetidinedicarboxylic acid, 1-(1,1-diMethylethyl) 3-Methyl ester; Methyl 2-(1-Boc-3-azetidinylidene)acetate; 3-(2-methoxy-2-oxoethylidene)azetidine-1-carboxylate; 1,1-Dimethylethyl 3-(2-methoxy-2-oxoethylidene)-1-azetidinecarboxylate; 3-methoxycarbonylmethylene-azetidine-1-carboxylic acid tert-butyl ester; 2-Methyl-2-propanyl 3-(2-methoxy-2-oxoethylidene)-1-azetidinecarboxylate 
