<unk>  or 9-β-D-arabinofuranosyladenine <unk>  is an antiviral drug which is active against herpes simplex and varicella zoster viruses.
Vidarabine
Nelarabine
Fludarabine 
Clofarabine
Floxuridine
Idoxuridine
Mafosfamide
Cladribine