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