6-(Difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine-4-acetic acid
2-(Bromomethyl)-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-5-methanol
2-(Difluoromethyl)-6-nitro-3-(trifluoromethoxy)pyridine-5-acetic acid
6-(Difluoromethyl)-3-nitro-2-(trifluoromethoxy)pyridine-4-acetic acid