6-Fluoro-3-methyl-2-(trifluoromethoxy)pyridine-4-acetic acid
3-(Difluoromethyl)-5-hydroxy-2-nitro-6-(trifluoromethoxy)pyridine
3-(Difluoromethyl)-4-hydroxy-6-nitro-2-(trifluoromethoxy)pyridine
2-Fluoro-5-methyl-3-(trifluoromethoxy)pyridine-6-acetic acid