Abstract: A Study on Mass Spectrometry of Squamosamide AnalogsJi Xiaoshen; Liang Xiaotian(Institute of Materia Medica,Chinese Academy of Medical Sciences,Peking Union Medical College,Beijing 100050,China)Received Abstract:The mass spectra of squamosamide analogs show bond forming and rupturing to give a new unusual fragment.Keywords:squamosamide analogs;mass spectrometry;fragment