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