Synonyms: s-Triazolo[1,5-a]pyrimidin-7-ol,5-methyl- (6CI,7CI,8CI);1,3,7-Triaza-4-hydroxy-6-methylindolizine;4-Hydroxy-6-methyl-1,2,4-triazolo[2,3-a]pyrimidine;4-Hydroxy-6-methyl-1,3,3a,7-tetraazaindene;5-Methyl-7-hydroxy-1,2,4-triazolo[1,5-a]pyrimidine;5-Methyl-7-hydroxy-1,3,4-triazaindolizine;5-Methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-ol;5-Methyl-s-triazolo[1,5-a]pyrimidin-7-ol;6-Methyl-4-hydroxy-1,3,3a,7-tetraazaindene;7-Hydroxy-5-methyl-s-triazolo[1,5-a]pyrimidine;NSC 32071;TAI;TAI (sensitizer);