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CAS No 69-89-6 , 3,7-dihydropurine-2,6-dione

  • Name: 3,7-dihydropurine-2,6-dione
  • Synonyms: 2,6-dioxopurine; Pseudoxanthine; 69-89-6; Xanthin;3,7-dihydropurine-2,6-dione; Isoxanthine;2,6-Dihydroxypurine; 1H-Purine-2,6-diol; Xanthic oxide;
  • CAS Registry Number:
  • Melting Point: 300 ºC
  • Density: 1.637 g/cm3
  • Refractive index: 1.5392 (20 C)
  • Safety Statements: R36;R43
  • Hazard Symbols: Xi: Irritant;
  • EINECS: 200-718-6
  • Molecular Weight: 152.11086
  • InchiKey: LRFVTYWOQMYALW-UHFFFAOYSA-N
  • InChI: InChI=1S/C5H4N4O2/c10-4-2-3(7-1-6-2)8-5(11)9-4/h1H,(H3,6,7,8,9,10,11)
  • Risk Statements: S36/37
  • Molecular Formula: C5H4N4O2
  • Molecular Structure:CAS No:69-89-6 3,7-dihydropurine-2,6-dione

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References of 3,7-dihydropurine-2,6-dione
Title: Xanthine
CAS Registry Number: 69-89-6
CAS Name: 3,7-Dihydro-1H-purine-2,6-dione
Synonyms: 2,6(1H,3H)-purinedione; 2,6-dioxopurine
Molecular Formula: C5H4N4O2
Molecular Weight: 152.11
Percent Composition: C 39.48%, H 2.65%, N 36.83%, O 21.04%
Literature References: Occurs in animal organs, yeast, potatoes, coffee beans, tea. First isolated from urinary bladder stones: Beilstein 26, 447 (1937). Prepd by treating a sulfuric acid soln of guanine with sodium nitrite: Fischer, Ann. 215, 309 (1882). Several other syntheses, cf. Levene, Bass, Nucleic Acids (New York, 1931).
Properties: Scales, plates from water. Dec on heating without melting and with partial sublimation. Kb at 40° = 6.09′10-14; Ka at 40° = 1.19′10-10. Absorption spectrum: Kalckar, J. Biol. Chem. 167, 429 (1947). One gram dissolves in 14.5 liters of water at 16°, in 1.4 liters boiling water; less sol in alcohol. Sol in mineral acids, freely sol in NH4OH and in NaOH solns.
 
Derivative Type: 1,3-Dimethylxanthine see Theophylline
 
Derivative Type: 3,7-Dimethylxanthine see Theobromine
 
Derivative Type: 1,3,7-Trimethylxanthine see Caffeine