As an analog of the antitumour and antiviral naturally occurring nucleoside 9-(β-D-arabinofuranosyl)adenine (ara-A), 9-(2-Deoxy-2-fluoro-beta-D-arabinofuranosyl)adenine inhibite the growth of T. 9-(2-Deoxy-2-fluoro-beta-D-arabinofuranosyl)adenine is very long name and it may be easier to understand by its CAS number-20227-41-2.