2-(Bromomethyl)-3-(difluoromethyl)-6-(trifluoromethyl)pyridine-4-acetic acid
3-(Bromomethyl)-2-(difluoromethyl)-4-(trifluoromethyl)pyridine-6-acetic acid
2-(Bromomethyl)-3-(difluoromethyl)-5-(trifluoromethyl)pyridine-4-acetic acid
6-(Bromomethyl)-2-(difluoromethyl)-4-(trifluoromethyl)pyridine-3-acetic acid