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CAS RN: 39809-25-1 | Product Number: P2164


Purity: >98.0%(T)(HPLC)
  • BRL 39123
  • 2-Amino-9-[4-hydroxy-3-(hydroxymethyl)butyl]-1H-purin-6-one
  • 9-[4-Hydroxy-3-(hydroxymethyl)butyl]guanine
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This product is a sample for RUO (research use only). Do not use this product for any purpose other than testing and research.

Product Number P2164
Purity / Analysis Method >98.0%(T)(HPLC)
Molecular Formula / Molecular Weight C__1__0H__1__5N__5O__3 = 253.26  
Physical State (20 deg.C) Solid
Storage Temperature -20°C
Condition to Avoid Heat Sensitive
CAS RN 39809-25-1
Reaxys Registry Number 4501039
PubChem Substance ID 253662013
Merck Index (14) 7083
MDL Number


Appearance White to Almost white powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(Nonaqueous Titration) min. 98.0 %
Properties (reference)
Melting Point 278 °C
Maximum Absorption Wavelength 253(H2O) nm
Solubility in water Practically insoluble
Degree of solubility in water 1.7 g/l   20 °C
Related Laws:
RTECS# UP0789400
Transport Information:
HS Number 2933599590
Penciclovir: An Antiherpesvirus Agent

Penciclovir, an acyclic guanine nucleoside analog, is an antiherpesvirus agent like acyclovir [A1915] . Famciclovir [F0842] is a prodrug of penciclovir. Penciclovir is active against most species in the herpesvirus family. It depends on the activity of the viral enzyme thymidine kinase (TK) to convert the agent to a monophosphate form and subsequently interfere with viral DNA replication. In contrast, human cellular TK have very little ability to add the initial phosphate group to penciclovir, which has extremely low toxicity for human cell. The spectrum of activity of penciclovir against human herpesviruses is similar to that of acyclovir, both compounds having good activity against herpes simplex viruses types 1 and 2 (HSV-1, HSV-2), varicella-zoster virus (VZV), and Epstein-Barr virus (EBV). Like acyclovir, penciclovir has slight activity against cytomegalovirus (CMV).


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