Synonyms: 1,3,5-Triazin-2(1H)-one, 6-amino-, 1,3,5-Triazin-2(1H)-one, 4-amino- (9CI), s-Triazin-2(1H)-one, 4-amino- (8CI), s-Triazin-2-ol, 4-amino- (7CI), 2-Hydroxy-4-aminotriazine, 4-Amino-1,3,5-triazin-2-ol, 4-Amino-2-hydroxy-1,3,5-triazine, 5-Azacytosine, NSC 51100, NSC 54006