3-Hydroxy-2-nitro-4-(trifluoromethoxy)pyridine-6-carboxylic acid
2-Hydroxy-6-nitro-5-(trifluoromethoxy)pyridine-3-carboxylic acid
Ethyl 2-(chloromethyl)-6-fluoro-3-(trifluoromethoxy)pyridine-4-acetate
Ethyl 2-(chloromethyl)-3-fluoro-4-(trifluoromethoxy)pyridine-5-acetate