ISSN:
1076-5174
Schlagwort(e):
Chemistry
;
Analytical Chemistry and Spectroscopy
Quelle:
Wiley InterScience Backfile Collection 1832-2000
Thema:
Chemie und Pharmazie
,
Physik
Notizen:
The positional isomers of mono[(Z)-9-octadecenoyl] glycerol, di[(Z)-12-octadecadienoyl] glycerol were derivatized with nicotinic acid chloride hydrochloride. The resulting nicotinoyl derivatives were examined by gas chromatography/mass spectrometry. In their electron impact mass spectra, each methylene group and double bond of the alkyl chain is reflected by a fragmentation pattern in the high mass region. This is caused by radical-induced cleavage of the alkyl chains following random hydrogen abstraction by the pyridine nucleus. An accurate determination of double bond positions in mono- and diacylglycerols is possible by characteristic spacings between abundant diagnostic ions in this fragmentation pattern.
Zusätzliches Material:
2 Ill.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1002/jms.1190300306
