paviin

fraxin \frax"in\, n. [From {Fraxinus}.] (Chem.)
   A colorless crystalline substance ({C16H18O10}) found in the
   bark of the ash ({Fraxinus}), and along with esculin in the
   bark of the horse-chestnut. It is structurally a derivative
   of a coumarin glucoside. It shows a delicate blue-green
   fluorescence in alkaline solutions; -- called also {paviin}
   and {fraxoside}. --MI-11br/

   Syn:

        8-([beta]-D-Glucopyranosyloxy)-7-hydroxy-6-methoxy-2H-1-benzopyran-2-one;
        also,
        7,8-dihydroxy-6-methoxy-coumarin-8-[beta]-D-glucoside;
        fraxetin-8-glucoside.
        [1913 Webster +PJC]
    

Paviin \Pa"vi*in\ (p[=a]"v[i^]*[i^]n), n. (Chem.)
   A glucoside found in species of the genus {Pavia} of the
   Horse-chestnut family.
   [1913 Webster]