3-(Phenylacetylhydrazino)-5-phenyl-1,2,4-triazine, hydrochloride 70551-90-5 ACETIC ACID, PHENYL-, 2-(5-PHENYL-3-as-TRIAZINYL)HYDRAZIDE, HYDROCHLORIDE Phenylacetic acid, 2-(5-phenyl-3-as-triazinyl)hydrazide, hydrochloride