Letter: Calibration of electrospray mass spectrometers with rccc-2,8,14,20-tetra-n-octyl-5,11,17,23-tetrahydroxyresorc[4]arene in the high mass range up to m/z 6000

Eur. J. Mass Spectrom. 7, 35–38 (2001)
DOI: 10.1255/ejms.386

Letter: Calibration of electrospray mass spectrometers with rccc-2,8,14,20-tetra-n-octyl-5,11,17,23-tetrahydroxyresorc[4]arene in the high mass range up to m/z 6000

Matthias C. Letzel, Ceno Agena and Jochen Mattay^*
Organische Chemie I, Fakultät für Chemie der Universität Bielefeld, Germany

ABSTRACT:

rccc-2,8,14,20-Tetra-n-octyl-5,11,17,23-tetrahydroxyresorc[4]arene has the property to form cluster ions in both positive- and negative-ion mode with good intensity without the addition of any modifiers such as cesium. These cluster ions may be used for the calibration of electrospray mass spectrometers in the mass range up to m/z 6000.

Keywords: ESI, mass spectrometry, calibration, high mass, calixarene, resorc[4]arene

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