1,2,4-Triazin-3(2H)-one, 5-(4-chlorophenyl)-, hydrazone (9CI) 3-Hydrazino-5-(4-chlorophenyl)-1,2,4-triazine 3-Hydrazino-5-(4-chlorophenyl)-as-triazine 4-26-00-01436 (Beilstein Handbook Reference) 59318-40-0 BRN 0173511 as-Triazine, 5-(4-chlorophenyl)-3-hydrazino-