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