5-Cyano-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-4-acetic acid
3-(Aminomethyl)-2-cyano-5-(trifluoromethoxy)pyridine-4-carboxylic acid
4-Cyano-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-5-acetic acid
2-Cyano-5-nitro-6-(trifluoromethoxy)pyridine-3-acetic acid