Jens Pietzsch, U. Julius, M. Hanefeld
Nov 1, 1997
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Influential Citations
11
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Journal
Rapid communications in mass spectrometry : RCM
Abstract
N(O,S)-Ethoxycarbonyl trifluoroethyl amino acid esters are formed by the reaction of amino acids with ethylchloroformate plus trifluoroethanol plus pyridine. The use of these derivatives for a rapid and sensitive determination of specific enrichment of stable isotopically labeled tracer amino acids in blood plasma and protein hydrolysates, by using gas chromatography/electron impact mass spectrometry, is discussed.