Article

Electrospray ionization tandem mass spectrometric characteristics and fragmentation mechanisms of distamycin analogues.

Department of Chemical Biology, The Key Laboratory of Bioorganic Chemistry and Molecular Engineering, Ministry of Education, College of Chemistry, Peking University, Beijing 100871, PR China.
Rapid Communications in Mass Spectrometry (impact factor: 2.79). 02/2002; 16(11):1035-9. DOI:10.1002/rcm.680 pp.1035-9
Source: PubMed

ABSTRACT The electrospray ionization tandem mass spectrometric (ESI-MS/MS) characteristics and fragmentation mechanisms of eight distamycin analogues containing N-methylpyrrole and N-methylimidazole were investigated. The members of two isomeric groups of distamycin analogues with the same elemental composition can be distinguished by MS/MS spectra of protonated molecules and of significant fragment ions.

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Keywords

distamycin analogues
 
electrospray ionization tandem mass spectrometric
 
elemental composition
 
fragmentation mechanisms
 
members
 
protonated molecules