Ethyl 2-cyano-5-(difluoromethyl)-4-hydroxypyridine-3-acetate
2-Cyano-3-(difluoromethyl)-4-hydroxypyridine-5-carboxylic acid
Methyl 4-(bromomethyl)-3-chloro-2-(difluoromethyl)pyridine-5-acetate
Methyl 3-(bromomethyl)-5-chloro-2-(difluoromethyl)pyridine-4-acetate