2-amino-3-methylsulfanyl-6-phenyl-1,2,4-triazin-5-one

2-amino-6-phenyl-1,2,4-triazine-3,5-dione

2-amino-4-methyl-6-phenyl-1,2,4-triazine-3,5-dione

2,3-diamino-6-phenyl-1,2,4-triazin-5-one

2-amino-3-(methylamino)-6-phenyl-1,2,4-triazin-5-one