N(O,S)-isobutoxycarbonyl isobutyl esters of amino acids



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Eur. J. Mass Spectrom. 8, 447 - 449 (2002)
DOI: 10.1255/ejms.522

Electron ionization mass spectra of N(O,S)-isobutoxycarbonyl isobutyl esters of amino acids

Tim G. Sobolevsky,* Alexander I. Revelsky and Igor A. Revelsky
Lomonosov Moscow State University, Chemistry Department, Lininskie Gory 1 Building 3, 119992 GSP-2 Moscow, Russia. E-mail:
Barbara Miller* and Vincent Oriedo
The Dow Chemical Corporation, Dow Building 1707, Industrial BioMaterials Platform, Midland, MI 48674, USA. E-mail:

ABSTRACT:
Mass spectra of N(O,S)-isobutoxycarbonyl isobutyl esters of 17 amino acids (L-alanine, glycine, L-valine, L-norvaline, L-leucine, L-isoleucine, L-norleucine, L-proline, L-asparagine, L-methionine, L-threonine, L-serine, L-phenylalanine, L-lysine, L-tryptophan, L-tyrosine and L-cystine) were obtained in the electron ionization mode. These derivatives were found suitable for the analysis of amino acids in aqueous media allowing proper identification and quantitation from the mass spectral characteristics.

Keywords: amino acids, derivatization, isobutyl chloroformate, gas chromatography-mass spectrometry

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