Product name | Capecitabine |
Molecular Formula | C15H22FN3O6 |
Molecular Weight | 359.35 |
CAS No. | 154361-50-9 |
Quality Standard | USP34, medical grade |
Appearance | White powder |
Items | Specifications | Results |
Apperance | White or off-white crystalline powder | White crystalline powder |
Identification | The spectrum of the sample corresponds to that of RS | Meets the requirements |
| The retention time of the major peak of the test solution corresponds to that of the RS | Meets the requirements |
Specific Rotation | +96.0°~+100.0° | +98.1° |
Water | ≤0.3% | 0.01% |
Heavy Metals | ≤20ppm | <20ppm |
(as Pb) |
Residue on ignition | ≤0.1% | 0.02% |
Assay | 98.0%~102.0% | 99.70% |
|
Function of Capecitabine
Capecitabine is rapidly absorbed through the intestinal mucosa after oral administration, and then converted into an inactive intermediate 5'-deoxy-5'fluorocytidine in the liver by carboxylesterase, and then decellularized by the liver and tumor The action of ammonia enzyme is converted into 5'-deoxy-5 'fluorouridine, and finally catalyzed by thymidine phosphorylase into fluorouracil (5-FU) in tumor tissue.
Clinical studies have shown that the concentration of 5-FU in tumor tissue after oral administration of this product is significantly higher than blood and muscle levels. The curative effect on various animal tumors is significantly higher than that of 5-FU. This product has a synergistic effect with a variety of anti-tumor drugs.
