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