5-Methoxy-3-(trifluoromethoxy)-4-(trifluoromethyl)pyridine-2-acetic acid
3-(Difluoromethyl)-2-methoxy-5-(trifluoromethoxy)pyridine-6-acetic acid
3-Methoxy-5-(trifluoromethoxy)-2-(trifluoromethyl)pyridine-4-acetic acid
6-(Difluoromethyl)-2-methoxy-4-(trifluoromethoxy)pyridine-3-acetic acid