Methyl 2-methyl-3-(trifluoromethoxy)-6-(trifluoromethyl)pyridine-5-acetate
Methyl 2-methyl-3-(trifluoromethoxy)-5-(trifluoromethyl)pyridine-6-acetate
Methyl 2-methyl-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-6-acetate
3-Methyl-6-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-acetic acid