Ethyl 3-methoxy-6-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-acetate
Ethyl 4-methoxy-3-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetate
Ethyl 3-methoxy-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-acetate
Ethyl 3-methoxy-4-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-5-acetate