Ethyl 5-(difluoromethyl)-4-hydroxy-2-(trifluoromethyl)pyridine-3-acetate
4-(Aminomethyl)-2-(difluoromethyl)-3-hydroxypyridine-5-carboxylic acid
Methyl 2-(bromomethyl)-6-(difluoromethyl)-3-hydroxypyridine-5-acetate
Ethyl 2-(chloromethyl)-4-(difluoromethyl)-5-hydroxypyridine-3-acetate