3-Amino-5-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-acetic acid
3-Amino-4-(difluoromethyl)-6-(trifluoromethoxy)pyridine-2-acetic acid
3-Bromo-5-cyano-6-(trifluoromethoxy)pyridine-2-carboxylic acid
3-Bromo-4-chloro-5-fluoro-2-(trifluoromethoxy)pyridine