54709-94-3
3-羟基-5-甲基哒嗪
→
~87%
867130-58-3
6-酮-1,6-二氢哒嗪-4-羧酸
5472-38-8
甲酸基丁二酸二乙酯
412301-44-1
6-oxo-1,4,5,6-tetrahydro-pyridazine-4-carboxylic acid ethyl ester
21427-85-0
6-氧代-1,6-二氢吡嗪-4-羧酸乙酯