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