2-Cyano-3-nitro-4-(trifluoromethoxy)pyridine-6-acetic acid
2-Chloro-6-nitro-5-(trifluoromethoxy)pyridine-3-acetic acid
Methyl 3-cyano-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-acetate
6-Chloro-3-nitro-2-(trifluoromethoxy)pyridine-4-acetic acid