4-Amino-3-(difluoromethyl)-2-nitro-6-(trifluoromethoxy)pyridine
4-Amino-2-(difluoromethyl)-6-nitro-3-(trifluoromethoxy)pyridine
4-Amino-2-(difluoromethyl)-3-nitro-6-(trifluoromethoxy)pyridine
Methyl 2-amino-5-(chloromethyl)-6-(trifluoromethoxy)pyridine-3-carboxylate