Synonyms: 2-Formyl-3-methyl-1-oxo-1,5-dihydro-benzo[4,5]imidazo[1,2-a]pyridine-4-carbonitrile;Pyrido[1,2-a]benzimidazole-4-carbonitrile, 2-formyl-1,5-dihydro-3-methyl-1-oxo-;2-formyl-3-methyl-1-oxo-1,5-dihydropyrido[1,2-a]benzimidazole-4-carbonitrile