3-(Diethylamino)-7-imino-7H-(1)benzopyrano(3',2':3,4)pyrido(1,2-a)benzimidazole-6-carbonitrile 52372-39-1 7H-(1)Benzopyrano(3',2':3,4)pyrido(1,2-a)benzimidazole-6-carbonitrile, 3-(diethylamino)-7-imino- 7H-(1)Benzopyrano(3',2':3,4)pyrido(1,2-a)benzimidazole-6-carbonitrile,3-(diethylamino)-7-imino- EINECS 257-885-3