1,2,4-Triazin-3(2H)-one, 5-(3,4-dichlorophenyl)-, hydrazone (9CI) 5-(3,4-Dichlorophenyl)-3-hydrazino-1,2,4-triazine 5-(3,4-Dichlorophenyl)-3-hydrazino-as-triazine 5-26-10-00437 (Beilstein Handbook Reference) 70551-74-5 BRN 0793795 as-Triazine, 5-(3,4-dichlorophenyl)-3-hydrazino-