1,2,4-Triazin-3(2H)-one, 5-(3-chlorophenyl)-, hydrazone (9CI) 5-(3-Chlorophenyl)-3-hydrazino-1,2,4-triazine 5-(3-Chlorophenyl)-3-hydrazino-as-triazine 5-26-10-00437 (Beilstein Handbook Reference) 70551-73-4 BRN 0788898 as-Triazine, 5-(3-chlorophenyl)-3-hydrazino-