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