Ethyl 6-cyano-4-nitro-3-(trifluoromethoxy)pyridine-2-carboxylate
5-(Aminomethyl)-3-cyano-4-nitro-2-(trifluoromethoxy)pyridine
Ethyl 5-chloro-4-(difluoromethyl)-3-(trifluoromethoxy)pyridine-2-acetate
Ethyl 2-cyano-3-nitro-5-(trifluoromethoxy)pyridine-6-carboxylate