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