Ethyl 3-(chloromethyl)-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetate
3-(Difluoromethyl)-2-methoxypyridine-4-sulfonamide
2-(Difluoromethyl)-6-methoxypyridine-3-sulfonamide
4-(Chloromethyl)-5-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-sulfonyl chloride