benzyl 1',4'-dihydro-2H,2'H-[3,3'-biazetylidene]-1(4H)-carboxylate p-toluenesulfonate

benzyl 1',4'-dihydro-2H,2'H-[3,3'-biazetylidene]-1(4H)-carboxylate p-toluenesulfonate · CAS 3050615-64-7