申请人:SHIMADZU CORPORATION
公开号:US10481163B1
公开(公告)日:2019-11-19
The present invention provides a mass spectrometry method using a mixed matrix, capable of easily and efficiently improving the ionization efficiency in mass spectrometry for peptides having a wide range of degrees of hydrophobicity (from hydrophilic to hydrophobic). A MALDI mass spectrometry method for analyzing a sample using as a mixed matrix, 2,4,6-trihydroxyalkylphenone represented by the following general formula (I):
wherein R represents an alkyl group having 3 to 12 carbon atoms, and a matrix (II) for mass spectrometry that is more hydrophilic than 2,4,6-trihydroxyalkylphenone represented by the formula (I) wherein R is an alkyl group having 3 carbon atoms.
本发明提供了一种使用混合基质的质谱分析方法,能够轻松有效地提高质谱分析中对具有宽范围疏水性(从亲水到疏水)的肽段的电离效率。一种分析样品的 MALDI 质谱方法,该方法使用以下通式 (I) 所代表的 2,4,6-三羟基烷基酚作为混合基质:
其中 R 代表具有 3 至 12 个碳原子的烷基,以及一种用于质谱分析的基质 (II),其亲水性高于由式 (I) 代表的 2,4,6-三羟基烷基苯酮(其中 R 代表具有 3 个碳原子的烷基)。