Methyl 3-bromo-2-(bromomethyl)-4-(difluoromethyl)pyridine-5-carboxylate
Methyl 2-bromo-6-(bromomethyl)-5-(difluoromethyl)pyridine-3-carboxylate
5-Chloro-3-(difluoromethyl)-4-fluoropyridine-2-carboxylic acid
Methyl 2-bromo-6-(bromomethyl)-3-(difluoromethyl)pyridine-4-carboxylate