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