A Caged In‐Source Laser‐Cleavable MALDI Matrix with High Vacuum Stability for Extended MALDI‐MS Imaging
作者:Qiuqin Zhou、Stefano Rizzo、Janina Oetjen、Annabelle Fülöp、Miriam Rittner、Hartmut Gillandt、Carsten Hopf
DOI:10.1002/anie.202217047
日期:——
vacuum-stable-by-design MALDI matrix enables long MALDI MS imaging measurements of at least 72 hours. Using a photo-removable 4,5-dimethoxy-2-nitrobenzyl (DMNB) group, organic synthesis transformed the widely used, but unfortunately very volatile MALDI matrix 2,5-dihydroxy acetophenone (2,5-DHAP) into a vacuum-stable matrix, which can be uncaged by the MALDI laser in the ion source and then perform as
一种新颖的真空稳定设计 MALDI 矩阵可实现至少 72 小时的长时间 MALDI MS 成像测量。使用光可去除的 4,5-二甲氧基-2-硝基苄基 (DMNB) 基团,有机合成将广泛使用但不幸的是非常易挥发的 MALDI 基质 2,5-二羟基苯乙酮 (2,5-DHAP) 转化为真空稳定的矩阵,它可以被离子源中的 MALDI 激光解笼,然后作为普通矩阵 2,5-DHAP 执行。