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