Abstract
MS/MS evaluation of the di-acetamide series and corresponding deutero-acetyl analogs indicated that a step-wise process involving sequential loss of acetyl, ammonia and ketene groups, as well as concerted pathways for the combined loss of these moieties was operative during fragmentation. A mechanism has been proposed for the formation of the (M minus 102)** plus ion which includes a cyclic product, analogous to the one formed after elimination of ammonia from the ethyl ester of lysine. Presentation of the MS/MS spectra in a 'tree' format greatly aided in postulating fragmentation schemes which were consistent with the observed electron impact results since the TSQ 'tree' program is able to display the entire three dimensional MS/MS data field in a convenient and controllable format.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 496-497 |
| Number of pages | 2 |
| Journal | Annual Conference on Mass Spectrometry and Allied Topics |
| State | Published - Dec 1 1984 |
ASJC Scopus subject areas
- Engineering(all)