英文别名:
Ethyl 6-Methyl-3-oxo-2,3-dihydropyridazine-4-carboxylate;2,3-Dihydro-6-methyl-3-oxo-4-pyridazinecarboxylic acid ethyl ester;6-Methyl-3-oxo-2,3-dihydro-pyridazine-4-carboxylic acid ethyl ester;4-Pyridazinecarboxylic acid, 2,3-dihydro-6-methyl-3-oxo-, ethyl ester