156335-37-4

Ethyl 4-oxo-1,4-dihydropy... ethyl 4-oxo-1H,4H-pyrrolo[1,2-b]pyridazine-3-carboxylate ethyl 1,4-dihydro-4-oxopyrrolo[1,2-b]pyridazine-3-carboxylate Ethyl 4-oxo-1,4-dihydropyrrolo[1,2-b]pyridazine-3-carboxylate 1,4-dihydro-4-oxo-Pyrrolo[1,2-b]pyridazine-3-carboxylic acid ethyl ester Pyrrolo[1,2-b]pyridazine-3-carboxylic acid, 1,4-dihydro-4-oxo-, ethyl ester