Synonyms: 7H-1,2,3-Triazolo[4,5-d]pyrimidin-7-one,1,4-dihydro- (9CI);7H-v-Triazolo[4,5-d]pyrimidin-7-one, 1,6-dihydro-(6CI,7CI,8CI);1H-1,2,3-Triazolo[4,5-d]pyrimidin-7-ol;1H-v-Triazolo[4,5-d]pyrimidin-7-ol;7-Hydroxy-1,2,3,4,6-pentaazaindene;7-Hydroxy-v-triazolo[d]pyrimidine;8-Azahypoxanthine;NSC 22709;