Nucleosides consist of nitrogenous bases covalently bound to sugars (ribose or deoxyribose) but without phosphate groups.?Nucleotides consist of nitrogen-containing bases, sugars (ribose or deoxyribose) and one to three phosphate groups.Nucleoside = sugar + baseNucleotide = sugar + base + phosphateNucleotides, as the structural units of DNA and RNA, play an important role in various life forms.?Moreover, nucleotides carry chemical energy in the form of nucleoside triphosphate (ATP, GTP, CTP, and UTP) in cells to provide energy for various important functions of cells, so they play a vital role in cell level metabolism.?In addition, nucleotides are involved in cellular signaling (e.g., cGMP) or in enzymatic reactions as part of cofactors (e.g., coenzyme A).Aladdin provides many nucleoside and nucleotide products to support your drug research and development and scientific research, such as nucleoside triphosphate (ATP, GTP, CTP, and UTP) carrying chemical energy mentioned above, coenzyme A, cGMP, etc., as well as many special nucleoside products. For example, some nucleosides and their derivatives have significant physiological functions,?For example, hypoxanthine nucleoside (inosine) can treat acute and chronic hepatitis and rheumatic heart disease, and increase white blood cells.?5-fluorouracil deoxynucleotides can resist tumor and lower toxicity than 5-fluorouracil. It has a certain effect on liver cancer, gastric cancer, rectal cancer, ovarian cancer and bladder cancer.?Cytosine arabinoside has a significant effect on alleviating leukemia.?5 '- deoxy-5' - iodo uracil nucleoside is a specific drug for the treatment of viral keratitis.