5,7-Dimethyl-1,3,4-triazaindolizine 5,7-Dimethyl-s-triazolo[1,5-a]pyrimidine 7681-99-4 NSC91495 [1,2,4]Triazolo[1,5-a]pyrimidine, 5,7-dimethyl- s-Triazolo[1,5-a]pyrimidine, 5,7-dimethyl-