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