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