Synonyms: 1-Phenyl-6H-1,2,4-triazolo(1',5':1,2)-5-oxopyrimido(5,4-b)indole;1-Phenyl-1H,6H-1,2,4-triazolo(1',5':1,2)pyrimido(5,4-b)indol-5-one;1H,6H-1,2,4-Triazolo(1',5':1,2)pyrimido(5,4-b)indol-5-one, 1-phenyl-;5H-(1,2,4)Triazolo(1',5':1,2)pyrimido(5,4-b)indol-5-one, 1,6-dihydro-1-phenyl-;AC1MJ9DS;LS-156856;116989-31-2