黄嘌呤核苷由黄嘌呤环组成。它是嘌呤代谢产物，也是咖啡因生物合成的中间产物。 黄嘌呤核苷在嘌呤代谢中起关键作用。乳腺癌中存在高水平的黄嘌呤核苷分泌。 应用： 黄嘌呤核苷二水合物可作为一维液相色谱分析(1D-LC)的测试品。 Xanthosine comprises xanthine ring. It is derived from a purine metabolite and is a caffeine biosynthesis intermediate. Xanthosine plays a key role in purine metabolism.High levels of xanthosine excretion is observed in breast cancer. Application： Xanthosine dihydrate has been used as a test compound in one dimensional liquid chromatography analysis (1D-LC ).