Entecavir

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Entecavir
Systematic (IUPAC) name
2-amino-9-[4-hydroxy-3-(hydroxymethyl)-
2-methylidene-cyclopentyl]-3H-purin-6-one
Identifiers
CAS number 142217-69-4
ATC code J05AF10
PubChem 153941
DrugBank APRD00948
Chemical data
Formula C12H15N5O3 
Mol. mass 277.279 g/mol
Pharmacokinetic data
Bioavailability  ?
Protein binding 13%
Metabolism  ?
Half life 128–149 hours
Excretion Renal 62–73%
Therapeutic considerations
Licence data

EU US

Pregnancy cat.

C(US)

Legal status

-only(US)

Routes Oral

Entecavir (INN) (IPA: [ɛnˈtɛkavir]) is an oral antiviral drug used in the treatment of hepatitis B infection. It is marketed under the trade name Baraclude (BMS).

Entecavir is a guanine analogue that inhibits all three steps in the viral replication process, and the manufacturer claims that it is more efficacious than previous agents used to treat hepatitis B (lamivudine and adefovir). It was approved by the U.S. Food and Drug Administration (FDA) in March 2005.

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