Ethyl 3-methyl-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-carboxylate
Ethyl 3-methyl-4-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 3-methyl-4-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-2-carboxylate
Ethyl 3-methyl-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-carboxylate