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