Capecitabine Description A chemotherapeutic agent used in the treatment of metastatic breast and colorectal cancers. A prodrug that is enzymatically converted to 5-fluorouracil in the tumor where it inhibits DNA synthesis and slows growth of tumor tissue. Specifications Cas No. 154361-50-9 Product ID C0162 Product Name Capecitabine Formula Wt. 359.35 Store Temp Ambient References Fischer, D. S. The Cancer Chemotherapy Handbook (6th Edition). Mosby.