Ethyl 3-(difluoromethyl)-2-methoxypyridine-5-acetate
5-(Chloromethyl)-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-sulfonyl chloride
4-(Chloromethyl)-5-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-sulfonyl chloride
2-(Chloromethyl)-5-(difluoromethyl)-4-(trifluoromethoxy)pyridine-3-carbonyl chloride