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Record Information
StatusExpected but not Quantified
Creation Date2012-09-06 15:16:50 UTC
Update Date2020-02-26 21:40:27 UTC
Secondary Accession Numbers
  • HMDB14847
Metabolite Identification
Common NameLamivudine
DescriptionLamivudine, also known as 3TC or epivir, belongs to the class of organic compounds known as 3'-thia pyrimidine nucleosides. These are nucleoside analogues with a structure that consists of a pyrimidine base, which is N-substituted at the 1-position with a 3'-thia derivative (1,3-oxazolidine) of the ribose moiety that is characteristic of nucleosides. Metabolism of lamivudine is a minor route of elimination. Via DNA incorporation, lamivudine metabolites competitively inhibit the activity of the HIV reverse transcriptase enzyme and act as a chain terminator of DNA synthesis. Lamivudine is a drug which is used for the treatment of hiv infection and chronic hepatitis b (hbv). A reverse transcriptase inhibitor and zalcitabine analog in which a sulfur atom replaces the 3' carbon of the pentose ring. Lamivudine is an extremely weak basic (essentially neutral) compound (based on its pKa). Within humans, lamivudine participates in a number of enzymatic reactions. In particular, lamivudine and uridine triphosphate can be biosynthesized from lamivudine-monophosphate and uridine 5'-diphosphate through the action of the enzyme 5'(3')-deoxyribonucleotidase, cytosolic type. In addition, lamivudine can be converted into lamivudine sulfoxide through its interaction with the enzyme sulfotransferase 1A1. The most common reported adverse reactions (incidence ≥15%) in adults were headache, nausea, malaise and fatigue, nasal signs and symptoms, diarrhea, and cough. Lamivudine is a synthetic nucleoside analogue and is phosphorylated intracellularly to its active 5'-triphosphate metabolite, lamivudine triphosphate (L-TP). Lamivudine is a nucleoside reverse transcriptase inhibitor (NRTI) with activity against Human Immunodeficiency Virus Type 1 (HIV-1) and hepatitis B (HBV) to disrupt viral DNA synthesis. In humans, lamivudine is involved in lamivudine metabolism pathway. This biotransformation is catalyzed by sulfotransferases.
2',3' Dideoxy 3' thiacytidineHMDB
Lamivudine, (2S-cis)-isomerHMDB
Chemical FormulaC8H11N3O3S
Average Molecular Weight229.256
Monoisotopic Molecular Weight229.052111923
IUPAC Name4-amino-1-[(2R,5S)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl]-1,2-dihydropyrimidin-2-one
Traditional Namelamivudine
CAS Registry Number134678-17-4
InChI Identifier
Chemical Taxonomy
Description belongs to the class of organic compounds known as 3'-thia pyrimidine nucleosides. These are nucleoside analogues with a structure that consists of a pyrimidine base, which is N-substituted at the 1-position with a 3'-thia derivative (1,3-oxazolidine) of the ribose moiety that is characteristic of nucleosides.
KingdomOrganic compounds
Super ClassNucleosides, nucleotides, and analogues
ClassNucleoside and nucleotide analogues
Sub Class3'-thia pyrimidine nucleosides
Direct Parent3'-thia pyrimidine nucleosides
Alternative Parents
  • 3'-thia pyrimidine nucleoside
  • Hydroxypyrimidine
  • Hydropyrimidine
  • Pyrimidine
  • Monothioacetal
  • Oxathiolane
  • Heteroaromatic compound
  • Azacycle
  • Organoheterocyclic compound
  • Oxacycle
  • Organopnictogen compound
  • Organic oxygen compound
  • Primary alcohol
  • Organooxygen compound
  • Organonitrogen compound
  • Alcohol
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External Descriptors

Biological location:


Naturally occurring process:


Industrial application:

Physical Properties
Experimental Properties
Melting Point160 - 162 °CNot Available
Boiling PointNot AvailableNot Available
Water Solubility2.76 g/LNot Available
LogP-1.4Not Available
Predicted Properties
Water Solubility2.76 g/LALOGPS
pKa (Strongest Acidic)14.29ChemAxon
pKa (Strongest Basic)-0.16ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count5ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area88.15 ŲChemAxon
Rotatable Bond Count2ChemAxon
Refractivity55.16 m³·mol⁻¹ChemAxon
Polarizability21.7 ųChemAxon
Number of Rings2ChemAxon
Rule of FiveYesChemAxon
Ghose FilterNoChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleNoChemAxon
Spectrum TypeDescriptionSplash KeyView
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, Positivesplash10-00uv-9710000000-73bdde0fcb4c41646b42Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (1 TMS) - 70eV, Positivesplash10-00dr-9810000000-86fa390c1f35b5657b84Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-03di-0910000000-93346cf49eef73914c7cSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-03di-4900000000-07c6901608fdcd9b93b8Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-03dj-9600000000-5e58e487d2a852e72115Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-004i-4970000000-db3826710ed881faa506Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-00n0-1900000000-f8fcf86f0a9e8e88d032Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-00di-9100000000-7bf9d4c9292e16f5a8cfSpectrum
Biological Properties
Cellular Locations
  • Cytoplasm
  • Membrane
Biospecimen Locations
  • Blood
  • Urine
Tissue LocationsNot Available
Normal Concentrations
BloodExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableTaking drug identified by DrugBank entry DB00709 details
UrineExpected but not QuantifiedNot QuantifiedNot AvailableNot AvailableTaking drug identified by DrugBank entry DB00709 details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB00709
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider ID54812
KEGG Compound IDC07065
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkLamivudine
METLIN IDNot Available
PubChem Compound60825
ChEBI ID63577
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB ID
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Fox Z, Dragsted UB, Gerstoft J, Phillips AN, Kjaer J, Mathiesen L, Youle M, Katlama C, Hill A, Bruun JN, Clumeck N, Dellamonica P, Lundgren JD: A randomized trial to evaluate continuation versus discontinuation of lamivudine in individuals failing a lamivudine-containing regimen: the COLATE trial. Antivir Ther. 2006;11(6):761-70. [PubMed:17310820 ]


General function:
Involved in ATP binding
Specific function:
Mediates export of organic anions and drugs from the cytoplasm. Mediates ATP-dependent transport of glutathione and glutathione conjugates, leukotriene C4, estradiol-17-beta-o- glucuronide, methotrexate, antiviral drugs and other xenobiotics. Confers resistance to anticancer drugs. Hydrolyzes ATP with low efficiency
Gene Name:
Uniprot ID:
Molecular weight:
  1. Olson DP, Scadden DT, D'Aquila RT, De Pasquale MP: The protease inhibitor ritonavir inhibits the functional activity of the multidrug resistance related-protein 1 (MRP-1). AIDS. 2002 Sep 6;16(13):1743-7. [PubMed:12218384 ]
General function:
Involved in ATP binding
Specific function:
Xenobiotic transporter that may play an important role in the exclusion of xenobiotics from the brain. May be involved in brain-to-blood efflux. Appears to play a major role in the multidrug resistance phenotype of several cancer cell lines. When overexpressed, the transfected cells become resistant to mitoxantrone, daunorubicin and doxorubicin, display diminished intracellular accumulation of daunorubicin, and manifest an ATP- dependent increase in the efflux of rhodamine 123
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  1. Wang X, Furukawa T, Nitanda T, Okamoto M, Sugimoto Y, Akiyama S, Baba M: Breast cancer resistance protein (BCRP/ABCG2) induces cellular resistance to HIV-1 nucleoside reverse transcriptase inhibitors. Mol Pharmacol. 2003 Jan;63(1):65-72. [PubMed:12488537 ]
General function:
Involved in ion transmembrane transporter activity
Specific function:
Involved in the renal elimination of endogenous and exogenous organic anions. Functions as organic anion exchanger when the uptake of one molecule of organic anion is coupled with an efflux of one molecule of endogenous dicarboxylic acid (glutarate, ketoglutarate, etc). Mediates the sodium-independent uptake of 2,3-dimercapto-1-propanesulfonic acid (DMPS). Mediates the sodium-independent uptake of p- aminohippurate (PAH), ochratoxin (OTA), acyclovir (ACV), 3'-azido- 3-'deoxythymidine (AZT), cimetidine (CMD), 2,4-dichloro- phenoxyacetate (2,4-D), hippurate (HA), indoleacetate (IA), indoxyl sulfate (IS) and 3-carboxy-4-methyl-5-propyl-2- furanpropionate (CMPF), cidofovir, adefovir, 9-(2- phosphonylmethoxyethyl) guanine (PMEG), 9-(2- phosphonylmethoxyethyl) diaminopurine (PMEDAP) and edaravone sulfate. PAH uptake is inhibited by p- chloromercuribenzenesulphonate (PCMBS), diethyl pyrocarbonate (DEPC), sulindac, diclofenac, carprofen, glutarate and okadaic acid. PAH uptake is inhibited by benzothiazolylcysteine (BTC), S-chlorotrifluoroethylcysteine (CTFC), cysteine S-conjugates S-dichlorovinylcysteine (DCVC), furosemide, steviol, phorbol 12-myristate 13-acetate (PMA), calcium ionophore A23187, benzylpenicillin, furosemide, indomethacin, bumetamide, losartan, probenecid, phenol red, urate, and alpha-ketoglutarate
Gene Name:
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Molecular weight:
  1. Wada S, Tsuda M, Sekine T, Cha SH, Kimura M, Kanai Y, Endou H: Rat multispecific organic anion transporter 1 (rOAT1) transports zidovudine, acyclovir, and other antiviral nucleoside analogs. J Pharmacol Exp Ther. 2000 Sep;294(3):844-9. [PubMed:10945832 ]