115091-91-3 5H-(1)Benzothiopyrano(4,3-b)pyridine-3-carbonitrile, 9-chloro-2-methoxy-4-(2-methoxyphenyl)- 9-Chloro-2-methoxy-4-(2-methoxyphenyl)-5H-(1)benzothiopyrano(4,3-b)pyridine-3-carbonitrile BRN 4274818