CAS 1820-81-1: 5-Chlorouracil

5-Chlorouracil is a chlorinated derivative of the pyrimidine nucleoside base uracil .

Compounds containing a pyrimidine ring, whether or not hydrogenated, or piperazine ring in the structure, nesoi

Impurity Fluorouracil EP Impurity E Applications Used for the experimental and clinical treatment of neoplastic and viral diseases. Fluorouracil EP Impurity E. References Yu, H., et al.: J. Biol. Chem., 268, 15935 (1993), Staleva, L., et al.: Mutat. Res., 370, 81(1996), Harris, V., et al.: J. Mol. Biol., 326, 1389 (2003)

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

5-Chlorouracil is a drug that is used to treat cancer. It has been shown to have biological properties, and its mechanism of action is not yet fully understood. 5-Chlorouracil can be synthesized in the laboratory by reacting sodium hydroxide with 5-chloro-2,4(1H,3H)-pyrimidinedione. In wastewater treatment plants, it reacts with organic matter in the water to form nontoxic products, such as carbon dioxide and urea. The reaction solution contains 5-chlorouracil, which undergoes tautomerization spontaneously or through the addition of base. This reaction is reversible, and both the erythro and threo forms are present in solution at equilibrium. The biological properties of 5-chlorouracil have been investigated using sublethal doses in experimental animals. In one study, 5-chlorouracil was found to inhibit xanthine oxidase activity in rats significantly more

5-Chlorouracil