2-Hydroxy-3-nitro-5-(trifluoromethoxy)pyridine-4-carbonyl chloride
2-(Difluoromethyl)-5-hydroxy-3-methyl-4-(trifluoromethoxy)pyridine
Ethyl 3-hydroxy-6-nitro-2-(trifluoromethoxy)pyridine-4-acetate
5-Fluoro-4-(fluoromethyl)-3-(trifluoromethoxy)pyridine-2-acetic acid