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