3-Amino-4-methyl-6-(4-hydroxyphenyl)pyridazine hydrochloride 4-(6-Amino-5-methyl-3-pyridazinyl)phenol monohydrochloride 86663-22-1 Phenol, 4-(6-amino-5-methyl-3-pyridazinyl)-, monohydrochloride SR 95087