Abstract
A series of N-(N-alkyl)- and N-(O-alkyl)phosphopeptide analogs were determined by positive and negative ion fast atom bombardment mass spectrometry and their fragmentation pathways were investigated. Their mass spectra gave abundant [MH - NH z R'] + , [MH - HOR] + , [MH - H 2 O] or [M - H - NH 2 R'] - , [M - H - HOR] - ions, which contained pentavalent tricoordinate phosphorus ions through the loss of amine or water. In the positive ion mass spectra, + NH 3 R' and + NH 3 CHRCONHR' were found, while [MH - NH 2 CHRCONHR'] + was suppressed. In the negative ion mass spectra, the pseudomolecular ion [M - H] - was the base peak, and almost all the fragment ions contained a phosphoryl group.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
