6-(Difluoromethyl)-4-nitro-3-(trifluoromethoxy)pyridine-2-sulfonamide
3-(Difluoromethyl)-4-nitro-6-(trifluoromethoxy)pyridine-2-sulfonamide
2-(Difluoromethyl)-3-nitro-5-(trifluoromethoxy)pyridine-6-sulfonamide
3-(Difluoromethyl)-6-nitro-4-(trifluoromethoxy)pyridine-2-sulfonyl chloride