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