Ethyl N-(((5-chloro-8-quinolinyl)oxy)-carbonyl)glycinate   、                                                                                      
甲烷磺酸                                                                                                                                                              在
                                                                                                                                                                                 
乙醇                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
异丙醇                                                                                  为溶剂,
                                                                                                                                                                                        以to give the purified ethyl N-(((5-chloro-8-quinolinyl)oxy)carbonyl)glycinate methanesulfonic acid salt as white fibrous crystals, m.p. 108°-110° C.的产率得到Ethyl N-(((5-chloro-8quinolinyl)oxy)carbonyl)glycinate methanesulfonic acid salt