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Field desorption mass spectra of methotrexate and folic acid analogs
Author(s) -
Kirk Marion C.,
Coburn William C.,
Piper James R.
Publication year - 1976
Publication title -
biomedical mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0306-042X
DOI - 10.1002/bms.1200030511
Subject(s) - folic acid , ion , methotrexate , mass spectrum , desorption , spectral line , yield (engineering) , chemistry , common emitter , field (mathematics) , field desorption , analytical chemistry (journal) , materials science , physics , adsorption , chromatography , optoelectronics , organic chemistry , mathematics , medicine , quantum mechanics , immunology , metallurgy , ionization , pure mathematics
Field desorption mass spectra of methotrexate and folic acid analogs yield abundant molecular or quasimolecular ions. At emitter currents above the best anode temperature, fragment ions which are useful as further confirmations of structures are observed.