Ethyl 6-chloro-2-methoxy-4-(trifluoromethoxy)pyridine-3-carboxylate
3-Cyano-4-nitro-6-(trifluoromethoxy)pyridine-2-acetonitrile
Methyl 4-chloro-2-(difluoromethyl)pyridine-5-acetate
2-Nitro-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-4-acetic acid