4-(Difluoromethyl)-2-fluoro-3-(trifluoromethoxy)pyridine-5-acetic acid
3-(Difluoromethyl)-5-fluoro-2-(trifluoromethoxy)pyridine-4-acetic acid
3-(Difluoromethyl)-4-fluoro-2-(trifluoromethoxy)pyridine-5-acetic acid
2-Fluoro-6-iodo-3-methyl-4-(trifluoromethoxy)pyridine