4-(Difluoromethyl)-3-methoxypyridine-2-sulfonamide
4-(Chloromethyl)-2-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-5-carbonyl chloride
3-(Difluoromethyl)-5-methoxypyridine-2-sulfonamide
5-(Chloromethyl)-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-carbonyl chloride