2-Methyl-3-cyano-4-(2'-difluoromethoxyphenyl)-5-oxo-1,4,5,7-tetrahydrofuro(3,4-b)pyridine 92638-16-9 BRN 4270155 Furo(3,4-b)pyridine-3-carbonitrile, 1,4,5,7-tetrahydro-4-(2-(difluoromethoxy)phenyl)-2-methyl-5-oxo-