Synonyms: 1,2,4-triazin-5(2H)-one, 3-methyl-6-phenyl-;1,2,4-triazin-5(4H)-one, 3-methyl-6-phenyl-;1,2,4-triazin-5-ol, 3-methyl-6-phenyl-;3-Methyl-6-phenyl-1,2,4-triazin-5(2H)-on;3-Methyl-6-phenyl-1,2,4-triazin-5(2H)-one;3-Méthyl-6-phényl-1,2,4-triazin-5(2H)-one;3-Methyl-6-phenyl-1,2,4-triazin-5-ol