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