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