Restricted accessLetterFirst published online 2001-2
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
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.
GerkensmeierT.IwanekW.AgenaC.FröhlichR.KotilaS.NätherC.MattayJ., Eur. J. Org. Chem.2257 (1999).
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GerkensmeierTh.AgenaC.IwanekW.KotilaS.NätherC.MattayJ., Z. Natuforsch., accepted for publication (2001).
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We were also able to use the automated calibration feature of the esquireControl software even though this is strongly dependent on the calibration of the “Smart Parameter Setting” (SPS) performed by the manufacturer. This SPS calibration is only reliable up to m/z 3000 and is used by the automated calibration algorithm.
