National Cancer Institute Thesaurus

Last uploaded: February 23, 2024
Preferred Name

Valacyclovir

Synonyms

valacyclovir

L-Valine ester with 9-((2-hydroxyethoxy)methyl)guanine

Valaciclovir

Valacyclovir

VALACYCLOVIR

ValACV

Zelitrex

Definitions

The hydrochloride salt of the L-valyl ester of the antiviral drug acyclovir. Orally administered, valacyclovir is rapidly converted to acyclovir which inhibits viral DNA replication after further conversion to the nucleotide analog acyclovir triphosphate by viral thymidine kinase, cellular guanyl cyclase, and a number of other cellular enzymes. Acyclovir triphosphate competitively inhibits viral DNA polymerase; incorporates into and terminates the growing viral DNA chain; and inactivates viral DNA polymerase. The greater antiviral activity of acyclovir against herpes simplex virus (HSV) compared with varicella-zoster virus (VZV) is due to its more efficient phosphorylation by HSV thymidine kinase.

ID

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C28235

ALT_DEFINITION

A substance that is being studied in the prevention of fungal, bacterial, and viral infections in patients undergoing donor stem cell transplantation with cells that are infected with cytomegalovirus. It belongs to the family of drugs called antivirals.

CAS_Registry

124832-26-4

CHEBI_ID

CHEBI:35854

Chemical_Formula

C13H20N6O4

code

C28235

Concept_In_Subset

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C176424

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C116978

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C201600

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C116977

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C63923

Contributing_Source

CTRP

FDA

HemOnc

DEFINITION

The hydrochloride salt of the L-valyl ester of the antiviral drug acyclovir. Orally administered, valacyclovir is rapidly converted to acyclovir which inhibits viral DNA replication after further conversion to the nucleotide analog acyclovir triphosphate by viral thymidine kinase, cellular guanyl cyclase, and a number of other cellular enzymes. Acyclovir triphosphate competitively inhibits viral DNA polymerase; incorporates into and terminates the growing viral DNA chain; and inactivates viral DNA polymerase. The greater antiviral activity of acyclovir against herpes simplex virus (HSV) compared with varicella-zoster virus (VZV) is due to its more efficient phosphorylation by HSV thymidine kinase.

Display_Name

Valacyclovir

FDA_UNII_Code

MZ1IW7Q79D

FULL_SYN

valacyclovir

L-Valine ester with 9-((2-hydroxyethoxy)methyl)guanine

Valaciclovir

Valacyclovir

VALACYCLOVIR

ValACV

Zelitrex

Has_Salt_Form

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C29535

label

Valacyclovir

Legacy Concept Name

Valacyclovir

NCI_Drug_Dictionary_ID

257236

PDQ_Closed_Trial_Search_ID

257236

PDQ_Open_Trial_Search_ID

257236

Preferred_Name

Valacyclovir

prefixIRI

Thesaurus:C28235

Semantic_Type

Organic Chemical

Pharmacologic Substance

UMLS_CUI

C0249458

subClassOf

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C281

http://ncicb.nci.nih.gov/xml/owl/EVS/Thesaurus.owl#C29575

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