Methyl 4-chloro-3-(difluoromethyl)-2-(trifluoromethoxy)pyridine-6-carboxylate
Methyl 4-chloro-2-(difluoromethyl)-6-(trifluoromethoxy)pyridine-3-carboxylate
Methyl 3-chloro-2-methoxy-6-(trifluoromethoxy)pyridine-5-carboxylate
Methyl 4-chloro-2-(difluoromethyl)-3-(trifluoromethoxy)pyridine-6-carboxylate