1. 
   xanthopterin
   Yellow pterin pigment found in some insect wings.
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   xanthopterin
   <chemical> 2-amino-1,5-dihydro-4,6-pteridinedione. Pigment first discovered in butterfly wings and widely distributed in plants and animals. ... Chemical name: 4,6-Pteridinedione, 2-amino-1,5-dihydro- ... (12 Dec 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?xanthopterin
   
   
3. 
   Xanthopterin
   Xanthopterin is a yellow, crystalline solid, that occurs mainly in the wings of butterflies and in the urine of mammals. Small microorganisms convert it into folic acid. It is the end product of a non-conjugated pteridine compound, and inhibits the growth of lymphocytes produced by concanovalin. Hi...
   Found op http://en.wikipedia.org/wiki/Xanthopterin
   
   
4. 
   xanthopterin
   1) Yellow pterin pigment found in some insect wings
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/xanthopterin/1
   
   

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