Methyl 3-bromo-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine-4-carboxylate
Methyl 4-bromo-5-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylate
4-Chloro-5-(difluoromethyl)-2-nitro-3-(trifluoromethoxy)pyridine
Methyl 4-bromo-6-(difluoromethyl)-2-(trifluoromethoxy)pyridine-3-carboxylate