New natural 2‐acetoxy fatty acids using chemical ionization and electron impact mass spectrometry

Abstract
The phospholipids of the spongePolymastia gleneni contain saturated long chain (C22–30)‐acetoxy fatty acids. Their structures were assigned based on chromatographic and spectrometric data as well as comparison with a synthetic sample. The use of capillary gas chromatography combined with chemical ionization and electron impact mass spectrometry was instrumental in the eludication of structures, since only a very small amount of crude lipids was available.

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