3-乙酰基-4-氧代戊酸乙酯

氨基丙二酸二乙酯盐酸盐

ethyl 4-(2-ethoxy-2-oxoacetyl)-3,5-dimethyl-1H-pyrrole-2-carboxylate

异亚硝基丙二酸二乙酯

ethyl 2-nitroso-3-oxobutanoate