Ethyl 4-cyano-3-(difluoromethyl)-2-hydroxypyridine-5-acetate
Methyl 6-(bromomethyl)-3-chloro-2-(difluoromethyl)pyridine-4-acetate
2-Chloro-4-(difluoromethyl)-3-methoxypyridine-6-sulfonamide
Methyl 2-(bromomethyl)-4-chloro-6-(difluoromethyl)pyridine-3-acetate