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xanthinemore about xanthine

xanthine


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Xanthine  \Xan"thine\,  n.  Also  Xanthin  \Xan"thin\  .  [Gr.  xanqo`s 
  yellow.]  (Physiol.  Chem.) 
  A  white  microcrystalline  nitrogenous  compound,  {C5H4O2N4}, 
  present  in  muscle  tissue,  in  the  liver,  spleen,  pancreas,  and 
  other  organs,  and  also  in  urine  (in  small  quantities)  and 
  some  urinary  calculi,  and  in  the  juices  of  certain  plants;  -- 
  so  called  because  it  leaves  a  yellow  residue  when  evaporated 
  to  dryness  with  nitric  acid.  Xanthine  is  closely  related  to 
  uric  acid. 




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