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Ganciclovir sodium API chemical
Ganciclovir or DHPG (9-(1,3-dihydroxy-2-propoxymethyl)guanine, alternative spelling: "Gancyclovir") is an antiviral medication used to treat cytomegalovirus (CMV) infections. Ganciclovir sodium is marketed under the trade names Cytovene and Cymevene (Roche). Ganciclovir for ocular use is marketed under the trade name Vitrasert (Bausch & Lomb). A prodrug form with improved oral bioavailability (valganciclovir) has also been developed.
Ganciclovir is a synthetic analogue of 2′-deoxy-guanosine. It is first phosphorylated to ganciclovir monophosphate by a viral kinase encoded by the cytomegalovirus (CMV) gene UL97 during infection. Subsequently, cellular kinases catalyze the formation of ganciclovir diphosphate and ganciclovir triphosphate, which is present in 10-fold greater concentrations in CMV or herpes simplex virus (HSV)-infected cells than uninfected cells.
Ganciclovir triphosphate is a competitive inhibitor of deoxyguanosine triphosphate (dGTP) incorporation into DNA and preferentially inhibits viral DNA polymerases more than cellular DNA polymerases. In addition, ganciclovir triphosphate serves as a poor substrate for chain elongation, thereby disrupting viral DNA synthesis by a second route.
Ganciclovir is indicated for:
It is also used for acute CMV colitis in HIV/AIDS and CMV pneumonitis in immunosuppressed patients.
Ganciclovir has also been used with some success in treating Human herpesvirus 6 infections.
Ganciclovir has also been found to be an effective treatment for herpes simplex virus epithelial keratitis.
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