6-(Difluoromethyl)-3-nitropyridine-2-acetic acid
4-Bromo-3-(chloromethyl)-2-(difluoromethyl)pyridine-6-carboxylic acid
Methyl 2-(difluoromethyl)-5-iodo-6-(trifluoromethyl)pyridine-3-acetate
4-Fluoro-5-(fluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylic acid