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