Methyl 3-fluoro-4-nitro-5-(trifluoromethoxy)pyridine-2-acetate
6-Cyano-3-methoxy-4-(trifluoromethoxy)pyridine-2-carboxylic acid
Methyl 3-fluoro-2-nitro-6-(trifluoromethoxy)pyridine-5-acetate
2-Cyano-5-methoxy-3-(trifluoromethoxy)pyridine-4-carboxylic acid