3-氨基-6-(4-甲基苯基)吡嗪羧酸二乙酯-4-氧化物

5-氨基-2-(2,6-二氟苯基)噻唑-4-羧酸乙酯

2-cyano-2-diazonio-1-ethoxyethenolate

ethyl 5-amino-1-cyclopropylimidazole-4-carboxylate

5-（叔丁氧酰胺基）噻唑-4-甲酸乙酯