esters of hexoses and trihydroxybenzene carboxylic acids
Merck AG, Darmstadt, GFR
solution in methanol; 10 pg standard
remarks - Although the structure of tannins is not well defined, the presence of hydroxybenzene moieties, e.g. gallic acid, is evidenced by the high peak intensities at m/z 94, 110 and 126 apparently representing phenol, dihydroxy-benzenes and trihydroxybenzenes respectively. The ion series at m/z 55, 68, 82, 84, 96, 98, 102, 110 and 126 may represent (esterified) hexose moieties.
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