N'-(2,4-Dihydroxy-α-methylbenzylidene)-4-pyridinecarbohydrazide;N'-(2,4-Dihydroxy-α-methylbenzylidene)isonicotinic hydrazide;N'-[1-(2,4-Dihydroxyphenyl)ethylidene]-4-pyridinecarbohydrazide;N'-[1-(2,4-Dihydroxyphenyl)ethylidene]isonicotinic hydrazide;Resacetophenone isoniazid hydrazone
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