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