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