5-Chloro-2-(difluoromethyl)-3-methoxypyridine-6-sulfonamide
4-Chloro-3-(difluoromethyl)-6-hydroxypyridine-2-sulfonyl chloride
4-Bromo-2-(difluoromethyl)-3-(trifluoromethyl)pyridine-5-carboxaldehyde
2-Chloro-4-(difluoromethyl)-3-iodo-6-methoxypyridine