2-Nitro-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-4-sulfonamide
5-(Difluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine-3-methanol
6-Nitro-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-sulfonamide
4-(Difluoromethyl)-5-methoxy-2-(trifluoromethoxy)pyridine-3-methanol