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