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(2014/08/05)5-amino-1-(6-phenyl-pyridazin-3-yl)-1H-pyrazole-4-carboxylic acid hydrazide
5-amino-1-(6-phenyl-pyridazin-3-yl)-1H-pyrazole-4-carboxylic acid ethyl ester
5-amino-1-(6-phenyl-pyridazin-3-yl)-1H-pyrazole-4-carboxylic acid benzylidenehydrazide
3-hydrazino-6-phenylpyridazine