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