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