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  • Title: Identification of O-cetylated N-acylneuraminic acids by mass spectrometry.
    Author: Kamerling JP, Vliegenthart JF.
    Journal: Carbohydr Res; 1975 May; 41():7-17. PubMed ID: 1137847.
    Abstract:
    A number of O-acetylated N-acylneuraminic acids, isolated from submandibular glands of cow and horse and from horse erythrocytes, have been characterized by mass spectrometry. On the basis of the typical fragmentation patterns of the pertrimethylsilyl derivatives of the methyl esters of the compounds, they were identified as 4-O-acetyl-, 9-O-acetyl-, 4,9-di-O-acetyl-, and 7,9-di-O-acetyl N-acetylneuraminic acid, and 4-O-acetyl-and 9-O-acetyl-N-glycolylneuraminic acid.
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