Thomas, D W Mass spectrometry of permethylated peptide derivatives; extension of the technique to peptides containing arginine or methionine. [electronic resource] - Biochemical and biophysical research communications Aug 1968 - 519-25 p. digital Publication Type: Journal Article ISSN: 0006-291X Standard No.: 10.1016/0006-291x(68)90693-1 doi Subjects--Topical Terms: Arginine--analysisMethionine--analysisMethodsMethylationPeptides--analysisSpectrum Analysis