Gs-441524

CAS No:

1191237-69-0

Molecular Formula:

C12H13N5O4

Molecular Weight:

291.26

Synonyms:
  • Remdesivir metabolite
  • GS441524
  • GS 441524
  • (2R,3R,4S,5R)-2-(4-aminopyrrolo[2,1-f][1,2,4]triazin-7-yl)-3,4-dihydroxy-5-(hydroxymethyl)oxolane-2-carbonitrile
  • 2-C-(4-aminopyrrolo[2,1-f][1,2,4]triazin-7-yl)-2,5-anhydro-D-altrononitrile
  • Remdesivir parent nucleoside
  • Remdesivir intermediate
  • 1BQK176DT6
  • 44468216
  • CHEBI:147281

IUPAC Name:

(2R,3R,4S,5R)-2-(4-aminopyrrolo[2,1-f][1,2,4]triazin-7-yl)-3,4-dihydroxy-5-(hydroxymethyl)oxolane-2-carbonitrile

InChIKey:

BRDWIEOJOWJCLU-LTGWCKQJSA-N

InChI:

InChI=1S/C12H13N5O4/c13-4-12(10(20)9(19)7(3-18)21-12)8-2-1-6-11(14)15-5-16-17(6)8/h1-2,5,7,9-10,18-20H,3H2,(H2,14,15,16)/t7-,9-,10-,12+/m1/s1

SMILES:

C1=C2C(=NC=NN2C(=C1)[C@]3([C@@H]([C@@H]([C@H](O3)CO)O)O)C#N)N

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Technical Data

Appearance

White to off-white solid

Solubility

Soluble in dimethyl sulfoxide

Identification

HPLC,The principal peak in the chromatogram obtained with the test solution is similar inretention time to the principal peak in the chromatogram obtained with reference solution.

Loss on drying

≤1.00%

Residue on ignition

≤0.5%

Purity

>99.70%

Description

GS-441524 is an adenosine nucleotide analog antiviral, similar to [remdesivir]. This molecule was patented in 2009. In vitro studies of GS-441524 have determined it has a higher EC50 than remdesivir against a number of viruses, meaning GS-441524 is less potent. GS-441524 continues to be studied in the treatment of Feline Infectious Peritonitis Virus, a coronavirus that only infects cats.

Safety Information

GHS

Pictogram:

GHS07GHS05GHS08

Signal Word:

Danger

Hazard Statements:

H315 : Causes skin irritation
H317 : May cause an allergic skin reaction
H318 : Causes serious eye damage
H334 : May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335 : May cause respiratory irritation
H341 : Suspected of causing genetic defects
H361 : Suspected of damaging fertility or the unborn child
H371 : May cause damage to organs

Precautionary Statements:

Prevention
P203: Obtain, read and follow all safety instructions before use.
P233: Keep container tightly closed.
P260: Do not breathe dust/fume/gas/mist/vapours/spray.
P261: Avoid breathing dust/fume/gas/mist/vapours/spray.
P264: Wash thoroughly after handling.
P264+P265: Wash thoroughly after handling. Do not touch eyes.
P270: Do not eat, drink or smoke when using this product.
P271: Use only outdoors or in a well-ventilated area.
P272: Contaminated work clothing should
not be allowed out of the workplace.
P280: Wear protective gloves/
protective clothing/eye protection/face protection.
P284: [In case of inadequate ventilation] wear respiratory protection.

Response
P302+P352: IF ON SKIN: Wash with plenty of soap and water.
P304+P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P305+P354+P338: IF IN EYES: Rinse cautiously with water for several minutes.
Remove contact lenses, if present and easy to do. Continue rinsing.
P308+P316: IF exposed or concerned: Get emergency medical attention immediately.
P317: Get medical help.
P318: IF exposed or concerned, get medical advice/attention.
P319: Get medical advice/attention if you feel unwell.
P332+P317: If skin irritation occurs: Get medical help.
P333+P317: If skin irritation or rash occurs: Get medical help.
P342+P316: If experiencing respiratory symptoms: Get emergency medical attention immediately.
P362+P364: Take off contaminated clothing and wash it before reuse.

Storage
P403: Store in a well-ventilated place.
P403+P233: Store in a well-ventilated place. Keep container tightly closed.
P405: Store locked up.

Disposal
P501: Dispose of contents/container in accordance with local/regional/national/international regulations.

References

Impact of remdesivir modifications on human HINT1 binding – A structural and functional study in the remdesivir activation pathway;Publication Name: Structure (London, England : 1993);Publication Date: 2026-05-25;PMID: 42184828;DOI: 10.1016/j.str.2026.04.015

Efectividad y seguridad de remdesivir y nirmatrelvir-ritonavir en la COVID-19 leve-moderada en los servicios de urgencia hospitalaria españoles;Publication Name: Medicina Clínica;Publication Date: 2025-08;PMID: 40412101;DOI: 10.1016/j.medcli.2025.106912

Successful treatment of prolonged COVID-19 with remdesivir and nirmatrelvir/ritonavir in a patient with a history of diffuse large B-cell lymphoma: a case report;Publication Name: Journal of the Egyptian National Cancer Institute;Publication Date: 2025-06-30;PMID: 40583098;DOI: 10.1186/s43046-025-00291-1

Eco-friendly spectrofluorimetric determination of remdesivir in the presence of its metabolite in human plasma for therapeutic monitoring in COVID-19 patients;Publication Name: Scientific Reports;Publication Date: 2025-06-23;PMID: 40550830;DOI: 10.1038/s41598-025-05198-4

Pharmacokinetics and Metabolism of Broad-Spectrum Antivirals Remdesivir and Obeldesivir with a Consideration to Metabolite GS-441524: Same, Similar, or Different?;Publication Name: Viruses;Publication Date: 2025-06-10;PMID: 40573427;DOI: 10.3390/v17060836

Population Pharmacokinetic Modelling of Remdesivir and Its Metabolite GS-441524 in Hospitalised Patients with COVID-19;Publication Name: Clinical Pharmacokinetics;Publication Date: 2025-04-22;PMID: 40261493;DOI: 10.1007/s40262-025-01496-2

High‐dose induction therapy and treatment termination criteria for feline infectious peritonitis with remdesivir, GS‐441524 and adjunctive mefloquine: 46 cases (2023);Publication Name: The Journal of small animal practice;Publication Date: 2025-04-18;PMID: 40251466;DOI: 10.1111/jsap.13869

Treatment of feline infectious peritonitis in cats with molnupiravir: clinical observations and outcomes for 54 cases;Publication Name: Australian Veterinary Journal;Publication Date: 2025-04-15;PMID: 40234239;DOI: 10.1111/avj.13433

Pharmacokinetics of GS‐441524 following intravenous remdesivir in six cats and results of therapeutic drug monitoring during treatment of feline infectious peritonitis: 22 cases (2021–2024);Publication Name: The Journal of small animal practice;Publication Date: 2025-03-17;PMID: 40097914;DOI: 10.1111/jsap.13849

Remdesivir is active in vitro against tick-borne encephalitis virus and selects for resistance mutations in the viral RNA-dependent RNA polymerase;Publication Name: Infectious diseases (London, England);Publication Date: 2025-02-20;PMID: 39973341;DOI: 10.1080/23744235.2025.2468510

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