115091-87-7 4-(3,4-Dimethoxyphenyl)-2-methoxy-5H-(1)benzothiopyrano(4,3-b)pyridine-3-carbonitrile 5H-(1)Benzothiopyrano(4,3-b)pyridine-3-carbonitrile, 4-(3,4-dimethoxyphenyl)-2-methoxy- BRN 4275445