Liquid Ionization Mass Spectrometry of Methyl Hydroperoxyoleates and Their Related Compounds.
Year: 1994
Type: article
Abstract: A mixture of isomeric methyl 9-, 10-, 11-, and 12-hydroperoxyoleates was analyzed by liquid ionization (LI) mass spectrometry. LI mass spectra of the hydroperoxides exhibited [M+H]+ peaks clearly at m/z 329, while both chemical ionization and fast atom bombardment mass spectra did not show ions directly related to the molecular weight. The fragment peaks of the hydroperoxides observed at m/z 295, corresponding to the loss of H2O2 from [M+H]+, were useful to discriminate the hydroperoxides from structurally isomeric hydroxyepoxides. In addition, several characteristic fragments were observed at m/z 173, 187, 199, 201, and 213, which were also indicative of the position of the hydroperoxy group in the hydroperoxides.
Authors: Yoshiyuki MOCHIDA, Yukio YOKOYAMA, Toshinaga KAWAI, Shigeo NAKAMURA, Masahiko TSUCHIYA
Institutions: Kanagawa University, Yokohama National University
Language: English
Subfield: Spectroscopy
Field: Chemistry
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W1984541465