Methyl 3-(difluoromethyl)-6-methyl-2-(trifluoromethyl)pyridine-5-acetate
Methyl 5-(difluoromethyl)-2-methyl-4-(trifluoromethyl)pyridine-3-acetate
Methyl 5-(difluoromethyl)-2-methyl-3-(trifluoromethyl)pyridine-4-acetate
Methyl 2-(difluoromethyl)-3-methyl-4-(trifluoromethyl)pyridine-6-acetate