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