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