Ara-a Triphosphate
Brand names,
Ara-a Triphosphate
Analogs
Ara-a Triphosphate
Brand Names Mixture
Ara-a Triphosphate
Chemical_Formula
C10H15N5O5
Ara-a Triphosphate
RX_link
http://www.rxlist.com/cgi/generic3/vidarabine.htm
Ara-a Triphosphate
fda sheet
Ara-a Triphosphate
msds (material safety sheet)
Ara-a Triphosphate
Synthesis Reference
No information avaliable
Ara-a Triphosphate
Molecular Weight
285.257 g/mol
Ara-a Triphosphate
Melting Point
No information avaliable
Ara-a Triphosphate
H2O Solubility
No information avaliable
Ara-a Triphosphate
State
Solid
Ara-a Triphosphate
LogP
-2.115
Ara-a Triphosphate
Dosage Forms
No information avaliable
Ara-a Triphosphate
Indication
For treatment of chickenpox - varicella, herpes zoster and herpes simplex
Ara-a Triphosphate
Pharmacology
Vidarabine is a synthetic purine nucleoside analogue with in vitro and in vivo inhibitory activity against herpes simplex virus types 1 (HSV-1), 2 (HSV-2), and varicella-zoster virus (VZV). The inhibitory activity of Vidarabine is highly selective due to its affinity for the enzyme thymidine kinase (TK) encoded by HSV and VZV. This viral enzyme converts Vidarabine into Vidarabine monophosphate, a nucleotide analogue. The monophosphate is further converted into diphosphate by cellular guanylate kinase and into triphosphate by a number of cellular enzymes. in vitro, Vidarabine triphosphate stops replication of herpes viral DNA. When used as a substrate for viral DNA polymerase, Vidarabine triphosphate competitively inhibits dATP leading to the formation of 'faulty' DNA. This is where Vidarabine triphosphate is incorporated into the DNA strand replacing many of the adenosine bases. This results in the prevention of DNA synthesis, as phosphodiester bridges can longer to be built, destabilizing the strand.
Ara-a Triphosphate
Absorption
No information avaliable
Ara-a Triphosphate
side effects and Toxicity
No information avaliable
Ara-a Triphosphate
Patient Information
No information avaliable
Ara-a Triphosphate
Organisms Affected
Human Herpes Viruses