Methyl 3-(difluoromethyl)-4,6-dimethoxypyridine-2-carboxylate
3-(Chloromethyl)-2-(difluoromethyl)pyridine-4-sulfonyl chloride
2-(Chloromethyl)-6-(difluoromethyl)pyridine-3-sulfonyl chloride
Methyl 3-(difluoromethyl)-2,4-dimethoxypyridine-5-carboxylate