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