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Famciclovir structure.jpg
famciclovir (FCV)
IUPAC name: see chemistry section
Synonyms: Famciclovirum, FCV
Formula: C14H19N5O4

 Uses: herpes treatment

 Properties: antiviral guanine analog

 Hazards: see drug interactions

Mass (g/mol): CAS #:
321.3318 104227-87-4

Famciclovir is an antiviral drug used for the treatment of several herpes viruses, especially herpes zoster (shingles). It ia a guanine analog and is a prodrug from of penciclovir. It is also use for the treatment of genital herpes and mucocutaneous herpes in patients with AIDS. It is converted to penciclovir triphosphate, which competes with deoxyguanosine for incorporation into viral DNA.


Its IUPAC chemical name is [2-(acetyloxymethyl)-4-(2-aminopurin-9-yl)butyl] acetate and its chemical formula is C14H19N5O4.

External links

The most up-to-date information about Famciclovir and other drugs can be found at the following sites.