trans-2-(p-nitrohenyl)cyclopropanecarboxylic acid ethyl ester

ethyl 5-(4-nitrophenyl)-4,5-dihydroisoxazole-3-carboxylate

5-苯基-3-异唑甲酸乙酯

3-乙氧基羰基-1-苯基戊烷-1,4-二酮

5-(4-硝基苯基)异噁唑-3-羧酸