Methyl 5-(difluoromethyl)-4-methoxy-2-(trifluoromethoxy)pyridine-3-carboxylate
4-(Difluoromethyl)-2-methoxy-5-(trifluoromethoxy)pyridine-3-acetic acid
5-(Difluoromethyl)-3-methoxy-2-(trifluoromethoxy)pyridine-4-acetic acid
2-(Difluoromethyl)-5-methoxy-4-(trifluoromethoxy)pyridine-3-acetic acid