4-(Chloromethyl)-2-(difluoromethyl)pyridine-3-sulfonyl chloride
3-(Chloromethyl)-5-(difluoromethyl)pyridine-2-sulfonyl chloride
Methyl 2-(difluoromethyl)-3,4-dimethoxypyridine-5-carboxylate
3-(Chloromethyl)-4-(difluoromethyl)pyridine-2-sulfonyl chloride