Ethyl 4-bromo-3-(bromomethyl)-6-(difluoromethyl)pyridine-2-acetate
Ethyl 4-bromo-3-(bromomethyl)-5-(difluoromethyl)pyridine-2-acetate
Ethyl 4-bromo-3-(bromomethyl)-2-(difluoromethyl)pyridine-5-acetate
4-Bromo-6-(difluoromethyl)-3-methoxypyridine-2-carboxylic acid