Cytosine, chemical name is 4-Amino-2-hydroxypyrimidine, CAS RN is 71-30-7, molecular formula is C4H5N3O. It is an important intermediate for fine chemical, pesticide and drug. It is mainly used in compounding lamivudine, gemcitabine, enocitabine, 5-fluorocytosine, etc.
β-D-Ribofuranos is a white crystalline powder, odorless, slightly bitter taste. it for ribavirinand other intermediates.
Hypoxanthine.CAS number: 68-94-0 .molecular formula: C5H4N4O
Hypoxanthine is a white crystalline powder. Hypoxanthine is a set of biological fermentation of chemical synthesis of nucleoside antiviral drugs and it is an intermediate of malignant tumor drug 6- mercaptopurine.