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(2007/10/02)bromine
sodium acetate
acetic acid
3-oxo-2-(phenylhydrazono)butyric acid ethyl ester
ethyl 2-(2-(4-bromophenyl)hydrazono)-3-oxobutanoate
2-(4-Bromo-phenyl)-3,4-dimethyl-6-(4-nitro-phenyl)-2,6-dihydro-pyrazolo[3,4-d]pyridazin-7-one
4-[2-(4-Bromo-phenyl)-3,4-dimethyl-7-oxo-2,7-dihydro-pyrazolo[3,4-d]pyridazin-6-yl]-benzoic acid
2-(4-bromophenyl)-3,4-dimethyl-6-phenyl-2,6-dihydro-7H-pyrazolo[3,4-d]pyridazin-7-one
2-(4-Bromo-phenyl)-7-chloro-3,4-dimethyl-2H-pyrazolo[3,4-d]pyridazine
2-(4-Bromo-phenyl)-3,4-dimethyl-2,6-dihydro-pyrazolo[3,4-d]pyridazin-7-one