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