Ethyl 5-cyano-2-nitro-3-(trifluoromethoxy)pyridine-6-acetate
Ethyl 4-cyano-3-nitro-2-(trifluoromethoxy)pyridine-6-acetate
3-(Aminomethyl)-5-cyano-2-(trifluoromethoxy)pyridine-6-carboxylic acid
Ethyl 4-cyano-2-nitro-3-(trifluoromethoxy)pyridine-6-acetate