5-(Difluoromethyl)-4-nitro-3-(trifluoromethoxy)pyridine-2-sulfonamide
4-(Bromomethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-5-acetic acid
3-(Difluoromethyl)-4-nitro-2-(trifluoromethoxy)pyridine-5-sulfonamide
5-(Bromomethyl)-3-(difluoromethyl)-4-(trifluoromethoxy)pyridine-2-acetic acid