Leucopterin is a convenient procedure is described for preparing pure xanthopterin, in 5-g. quantities, from leucopterin synthesized from triamino-4-hydroxypyrimidine.
Leucopterin shall be sealed to preserve with argon. Know-how slant: 246.cardinal, Molecular Formula: C6H5N5O3. Fortschr. Chem. Org. Naturst. 4, 64 (1945).
Properties: good bloodless crystals shaping white-livered Na and Ag salts, and a sparingly sol NH4 saliferous. Solvable successful base-forming solns with blue fluorescence. It is a crystalline alkali-soluble compound H2NC6N4(OH)3 that is the Caucasian pigment of cultivated cabbage philanders and other lepidoptera and wasps and follows transmutable into xanthopterin on reduction; 2-amino-4,6,7-trihydroxy-pteridine
This mathematical product, Leucopterin equals a dreary teensy-weensy empty silicon dioxide.meltable arriving aqueous alkali,then present blue-fluorescence.put-upon in biochemical consider.practiced in organic synthesis.
A colorless substance determined fashionable the backstages of philanders (peculiarly from white-winged butterflies). May be obtained from xanthopterin from dehydrogenation: Wayland the Smith, Purrmann, Ann. CAS: 492-11-5 . 544, 172 (1940). Synthesis by fusing 2,4,5-triamino-6-hydroxypyrimidine with an overindulgence of oxalic back breaker: Purrmann, ibid. 188. See also ref under Xanthopterin and review on pterins by Purrmann,
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