Methyl 2-fluoro-6-nitro-3-(trifluoromethoxy)pyridine-5-acetate
Methyl 6-fluoro-3-nitro-2-(trifluoromethoxy)pyridine-4-acetate
4-(Difluoromethyl)-6-fluoro-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine
Methyl 2-fluoro-5-nitro-3-(trifluoromethoxy)pyridine-6-acetate