Notes: 2'-Fluoro-2'-deoxy-arabino-uridine is an antiviral nucleoside and a derivative of the pyrimidine nucleoside uridine (Item No. 20300).{26081} It inhibits the replication of herpes simplex virus 1 (HSV-1) in infected Vero cells when used at a concentration of 1 µg/ml and does not induce cytotoxicity in L5178Y or P815 cells (IC50 = >10 µg/ml for both).