Ethyl 4-cyano-3-methyl-5-(trifluoromethoxy)pyridine-2-acetate
6-Cyano-4-(difluoromethyl)-3-nitro-2-(trifluoromethoxy)pyridine
Ethyl 4-cyano-2-methyl-5-(trifluoromethoxy)pyridine-3-acetate
2-Cyano-4-(difluoromethyl)-3-nitro-5-(trifluoromethoxy)pyridine