1,2,4-Triazine-3,5-diamine, 6-(2,5-dichlorophenyl)- 3,5-Diamino-6-(2,5-dichlorophenyl)-1,2,4-triazine 6-(2,5-Dichlorophenyl)-1,2,4-triazine-3,5-diamine 77668-43-0