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