title: Simultaneous determination of allopurinol, oxipurinol, hypoxanthine and xanthine in biological fluids by high-performance liquid chromatography.
mesh_terms: D000493:Allopurinol / Q000032:analysis*; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D006801:Humans; D019271:Hypoxanthine; D007042:Hypoxanthines / Q000032:analysis*; D010117:Oxypurinol / Q000032:analysis*; D011743:Pyrimidines / Q000032:analysis*; D019820:Xanthine; D014970:Xanthines / Q000032:analysis*
chemical_list: D007042:Hypoxanthines; D011743:Pyrimidines; D014970:Xanthines; D019820:Xanthine; D019271:Hypoxanthine; D000493:Allopurinol; D010117:Oxypurinol