4-Amino-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-5-carboxylic acid
6-Amino-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetonitrile
2-Amino-4-(difluoromethyl)-6-(trifluoromethoxy)pyridine-3-acetonitrile
5-Amino-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-carboxylic acid