API—Fluorouracil
Introduction Fluorouracil is a white to nearly white crystalline powder that is sparingly soluble in water and alcohol. The chemical name of it is 5-fluoro-2,4(1H,3H)-pyrimidinedione. Fluorouracil is a cytotoxic chemoradiotherapy medication used to treat rectal cancer, head and neck cancer, esophageal cancer, stomach cancer, pancreatic cancer, breast cancer, and cervical cancer by intravenous injection. The structure is shown in fig. 1. Fig. 1 Structure of fluorouracil Application in the treatment of cancer Fluorouracil can be used in the treatment of multiple cancers. Several examples are described below [1] . Rectal cancer Fluorouracil has effectively employed in chemoradiotherapy for rectal cancer, significantly improving survival in palliative treatment. Recently, preoperative chemoradiotherapy with fluorouracil infusion has demonstrated superiority compared with surgery or external beam radiation alone in nonrandomized studies. Sixteen recent studies involving more than 100...