Xanthosine

Xanthosine is a nucleoside derived from xanthine and ribose. It is the biosynthetic precursor to 7-methylxanthosine by the action of 7-methylxanthosine synthase. 7-Methylxanthosine in turn is the precursor to theobromine (active alkaloid in chocolate), which in turn is the precursor to caffeine, the alkaloid in coffee and tea. ...
Found on http://en.wikipedia.org/wiki/Xanthosine

xanthosine

9-beta-d-ribosylxanthine;the deamination product of guanosine (O replacing -NH2). ... Synonym: xanthine ribonucleoside. ... Abbreviation: Xao ... (05 Mar 2000) ...
Found on http://www.encyclo.co.uk/local/20973

xanthosine

(zanĀ“tho-sēn) a nucleoside composed of xanthine and ribose.
Found on http://www.encyclo.co.uk/local/21001

xanthosine

(X, Xao) Type: Term Pronunciation: zan′thō-sēn, -sin Definitions: 1. the deamination product of guanosine (O replacing -NH2). Synonyms: xanthine ribonucleoside
Found on http://www.medilexicon.com/medicaldictionary.php?t=100157
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