Ethyl 4-(difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine-3-carboxylate
2-(Difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine-5-acetic acid
Ethyl 5-(difluoromethyl)-2-nitro-4-(trifluoromethoxy)pyridine-3-carboxylate
5-(Aminomethyl)-4-(trifluoromethoxy)-3-(trifluoromethyl)pyridine-2-acetonitrile