25747-36-8 Dypnone guanylhydrazone hydrochloride GUANIDINE, ((gamma-METHYL-alpha-PHENYLCINNAMYLIDENE)AMINO)-, MONOHYDROCHLORIDE Hydrazinecarboximidamide, 2-(1,3-diphenyl-2-butenylidene)-, monohydrochloride (9CI) NSC 67025 WR 5677