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