4-Bromo-5-(chloromethyl)-3-(difluoromethyl)pyridine-2-carboxylic acid
5-Bromo-3-(fluoromethyl)-2-(trifluoromethoxy)pyridine-4-acetonitrile
4-Fluoro-2-iodo-3-(trifluoromethoxy)pyridine-5-carboxylic acid
5-Bromo-2-(difluoromethyl)-4-nitropyridine-3-carboxylic acid