(Elements & Compounds) a white crystalline bitter alkaloid responsible for the stimulant action of tea, coffee, and cocoa: a constituent of many tonics and analgesics. Formula: C8H10N4O2. See alsoxanthine2 [C19: from GermanKaffein,fromKaffeecoffee] ...
(2,6-dioxopurine) an intermediate product of the metabolic degradation of purine bases. Its structural formula is Xanthine forms yellow crystals. Its melting point is 220°C (with decomposition), and its molecular weight is 152.12. Xanthine dissolves poorly in water and better in alcohol. It di...
This work presents synthesis and study of a new mixed ligand metal complexes of 1,3,7-trimethylxanthine and 1,3-dimethyl-7H-purine-2,6-dione with some other ligands like SCN and OCN ions to give the general formula [M(Tx)2(Tp) )2XY] where M=Co(II), Ni(II), Cu(II), Zn(II)...
1.(Elements & Compounds) a crystalline compound related in structure to uric acid and found in urine, blood, certain plants, and certain animal tissues. Formula: C5H4N4O2 2.(Elements & Compounds) any substituted derivative of xanthine, esp one of the three pharmacologically active methylated xan...