Definition: A pyrimidine nucleoside analog that is used mainly in the treatment of leukemia, especially acute non-lymphoblastic leukemia. Cytarabine is an antimetabolite antineoplastic agent that inhibits the synthesis of DNA. Its actions are specific for the S phase of the cell cycle. It also has antiviral and immunosuppressant properties. (From Martindale, The Extra Pharmacopoeia, 30th ed, p472)
fiacitabine [ 1-(2-fluoro-2-deoxy-beta-D-arabinofuranosyl)-5-iodocytosine,2'-deoxy-2'-fluoro-beta-arabinofuranosyl-5-iodocytosine,2'-fluoro-5-iodo-1-beta-D-arabinofuranosylcytosine,2'-fluoro-5-iodo-aracytosine,2(1H)-pyrimidinone, 4-amino-1-(2-deoxy-2-fluoro-beta-D-arabinofuranosyl)-5-iodo-,FIAC,fiacitabine monohydrochloride,fiacitabine monohydrochloride, 2-(14)C-labeled,fiacitabine, (alpha-D)-isomer ] anti-herpes virus agent which also inhibits growth of certain human tumor cell lines in vitro; RN given refers to (beta-D)-isomer; structure given in first source