21427-85-0

Ethyl 6-hydroxypyridazine-4-carboxylate Ethyl 1,6-dihydro-6-oxo-4-pyridazinecarboxylate ethyl 6-oxo-1,6-dihydropyridazine-4-carboxylate 6-oxo-1,6-dihydropyridazine-4-carboxylic acid ethyl ester 1,6-dihydro-6-oxo-4-Pyridazinecarboxylic acid Ethyl ester 4-Pyridazinecarboxylic acid, 1,6-dihydro-6-oxo-, ethyl ester