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Quantitative analysis of fluorimated ethylchloroformate derivatives of non-protein amino acids using positive and negative chemical ionization gas chromatography-mass spectometry

โœ Scribed by Ping Cao; Mehdi Moini

Book ID
107785684
Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
302 KB
Volume
710
Category
Article
ISSN
1873-3778

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Characterization of fluorinated ethylchl
Characterization of fluorinated ethylchloroformate derivatives of protein amino acids using positive and negative chemical ionization gas chromatography/mass spectrometry
โœ Mahnaz Vatankhah; Mehdi Moini ๐Ÿ“‚ Article ๐Ÿ“… 1994 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 395 KB ๐Ÿ‘ 2 views

A solution of ethyl chloroformate + trifluoroethanol (or ethanol) + pyridine reacts rapidly with carboxylic and amino groups of amino acids to form n-ethoxycarbonyl amino acid trifluoroethyl (or ethyl) esters, which produce strong peaks representative of molecular ions in both positive and negative