Synonyms: 3-Methyl-4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carbonitrile;Imidazo[5,1-d]-1,2,3,5-tetrazine-8-carbonitrile, 3,4-dihydro-3-methyl-4-oxo-;3-Methyl-4-oxo-3,4-dihydro-imidazo[5,1-d][1,2,3,5]tetrazine-8-carbonitrile;Cyanotemozolomide;