Methyl 2,3-difluoro-5-(trifluoromethoxy)pyridine-6-carboxylate
Ethyl 2-(chloromethyl)-5-methyl-4-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 6-(chloromethyl)-4-methyl-2-(trifluoromethoxy)pyridine-3-carboxylate
Ethyl 2-(chloromethyl)-4-methyl-5-(trifluoromethoxy)pyridine-3-carboxylate