Chemical formula: C₈H₁₀FN₃O₃S  Molecular mass: 247.043 g/mol 

Active ingredient description

Emtricitabine is a synthetic nucleoside analogue of cytidine with activity that is specific to HIV-1, HIV-2 and HBV. Emtricitabine is phosphorylated by cellular enzymes to form emtricitabine 5'-triphosphate, which competitively inhibits HIV-1 reverse transcriptase, resulting in DNA chain termination. Emtricitabine is a weak inhibitor of mammalian DNA polymerase α, β and ε and mitochondrial DNA polymerase γ.

Medicine classification

This medicinal substance has been classified in the anatomical therapeutic chemical (ATC) classification according to its main therapeutic use as follows:

ATC code Group title Classification
J05AF09 Emtricitabine J Antiinfectives for systemic use → J05 Antivirals for systemic use → J05A Direct acting antivirals → J05AF Nucleoside and nucleotide reverse transcriptase inhibitors
Discover more medicines within J05AF09

Product monographs

Competent medicine agencies globally have authorized commercialization of this active ingredient according to these medication package inserts (MPIs):

Title Information Source Document Type  
EMTRIVA Oral solution European Medicines Agency (EU) MPI, EU: SmPC
EMTRIVA Hard capsule European Medicines Agency (EU) MPI, EU: SmPC

Structural formula

Graphic representation of the active ingredient's molecular structure

External identifiers

CAS Substance: 143491-57-0
DrugBank Drug: DB12753
KEGG Drug: D01199
RxNorm Ingredient: 276237
SNOMED-CT Concept: 404856006
Emtricitabine (substance)
UNII Identifier: G70B4ETF4S


Emtricitabine is an active ingredient of these brands:

United States (US)

Australia (AU)

Austria (AT)

Brazil (BR)

Canada (CA)

Croatia (HR)

Cyprus (CY)

Ecuador (EC)

Estonia (EE)

Finland (FI)

France (FR)

Germany (DE)

Hong Kong (HK)

Ireland (IE)

Israel (IL)

Italy (IT)

Japan (JP)

Lithuania (LT)

Mexico (MX)

Netherlands (NL)

New Zealand (NZ)

Nigeria (NG)

Poland (PL)

Romania (RO)

Singapore (SG)

South Africa (ZA)

Spain (ES)

Turkey (TR)

United Kingdom (UK)

Note the following: The list of brand names is continuously updated, and thus does not include the total of products circulating worldwide.

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