Výsledky vyhledávání - "Ritva Romppanen"

Low-energy collision-induced dissociation tandem mass spectrometry of 7-acetonyloxycoumarins

Autor: Janne Jänis, Juri M. Timonen, Ritva Romppanen, Paula Aulaskari

Publikováno v: Rapid Communications in Mass Spectrometry. 27:2665-2675

RATIONALE Coumarins are naturally occurring, oxygen-containing heterocycles with considerable pharmaceutical potential. For structural elucidation of natural or synthetic coumarins, tandem mass spectrometry (MSn) represents an essential tool. In this

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0e432a852b69860521a1c193a0bd3e25
https://doi.org/10.1002/rcm.6735

Zobrazit plný text záznamu

Gas-phase oxidation and reduction of some 1-(2-benzothiazolyl)-3,5-diphenyl formazans. Complex formation with transition metals under laser desorption ionization

Autor: Ritva Romppanen, Pirjo Vainiotalo, Silja Mäkinen, Jari M. J. Nuutinen

Publikováno v: Journal of the American Society for Mass Spectrometry. 10:339-346

Five differently substituted 1-(2-benzothiazolyl)-3,5-diphenyl formazans were studied by laser desorption ionization (LDI) and matrix assisted laser desorption/ionization (MALDI) mass spectrometry. The best explanation of the results is that the form

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f36fd008d7c8c1d92ee0acc7d8233560
https://doi.org/10.1016/s1044-0305(98)00161-5

Zobrazit plný text záznamu

Vyhledávací nástroje:

Upřesnit hledání