2-氨基-3-氧代-丁酸乙酯盐酸盐

乙酰丙酮酸乙酯

3-bromo-4-methyl-pyrrole-2,5-dicarboxylic acid diethyl ester

4-溴-3,5-二甲基-1H-吡咯-2-羧酸乙酯

3-bromo-4-methyl-pyrrole-2,5-dicarboxylic acid-5-ethyl ester