The Structure of Capecitabine (CAS NO.154361-50-9):

IUPAC: pentyl N-[1-[(2R,3R,4S,5R)-3,4-dihydroxy-5-methyloxolan-2-yl]-5-fluoro-2-oxopyrimidin-4-yl]carbamate 
Empirical Formula: C₁₅H₂₂FN₃O₆
Molecular Weight: 359.3501
H bond acceptors: 9
H bond donors: 3
Freely Rotating Bonds: 8
Polar Surface Area: 89.9 Å²
Index of Refraction: 1.6
Molar Refractivity: 82.32 cm³
Molar Volume: 240.5 cm³
Surface Tension: 51.3 dyne/cm
Density: 1.49 g/cm³
Melting point: 110-121 °C
Storage: Store in original container in a cool dark place.
Appearance: Colourless solid
Solubility in water: Slightly soluble
Categories: Active Pharmaceutical Ingredients; Antineoplastic; Bases & Related Reagents; Intermediates & Fine Chemicals; Nucleotides; Pharmaceuticals

  Capecitabine , with CAS number of 154361-50-9, can be called Cytidine,5'-deoxy-5-fluoro-N-[(pentyloxy)- carbonyl]- ; (1-(5-Deoxy-beta-D-ribofuranosyl)-5-fluoro-1,2-dihydro-2-oxo-4-pyrimidinyl)-carbamic acid pentyl ester ; pentyl N-[1-[(2R,3R,4R,5R)-3,4-dihydroxy-5-methyl-oxolan-2-yl]-5-fluoro-2-oxo-pyrimidin-4-yl]carbamate ; Capecitabine (JAN/USAN) ; Pentyl [1-(3,4-dihydroxy-5-methyl-oxolan-2-yl)-5-fluoro-2-oxo-pyrimidin-4-yl]aminoformate；Capecitabine ; Pentyl [1-(3,4-dihydroxy-5-methyl-oxolan-2-yl)-5-fluoro-2-oxo-pyrimidin-4-yl]aminoformate ; Capecitabine and its intermediates ; Capecitabine 99% . It is a colourless solid, Capecitabine (CAS NO.154361-50-9) can be used as an antineoplastic agent, a prodrug of doxifluridine.  Capecitabine (CAS NO.154361-50-9) is an orally-administered chemotherapeutic agent used in the treatment of metastatic breast and colorectal cancers. Capecitabine (CAS NO.154361-50-9) is a prodrug, that is enzymatically converted to 5-fluorouracil in the tumor, where it inhibits DNA synthesis and slows growth of tumor tissue.