%0 Journal Article %T Rearrangement mechanism of the sodium adducts of Fmoc protected amino acids %A Jintang Du %A Yanmei Li %A Zhentai Zhu %A Yi Chen %A Yufen Zhao %J Chinese Science Bulletin %@ 1861-9541 %D 2003 %I %R 10.1360/03wb0093 %X The cationized 9-fluorenylmethoxycarbonyl (Fmoc) protected amino acids were analyzed by the electrospray ionization tandem mass spectrometry (ESI-MS/MS). A rearrangement reaction leading to the C-terminal hydroxyl group transfer was observed. The sodium adducts of Fmoc-OH was formed. A possible rearrangement mechanism was proposed. The rearrangement reaction depended on the Fmoc group, metal ions and metal ion radius. It was shown that the Fmoc group has a strong affinity to the hydroxyl group in the gas phase. %K Fmoc protected amino acids %K rearrangement reaction %K ESI-MS %K protein sequencing %K peptide %U http://link.springer.com/article/10.1360/03wb0093