research use only

Cabotegravir (GSK1265744) HIV Integrase inhibitor

Name: Cabotegravir (GSK1265744)
Brand: Selleck Chemicals
SKU: S7766
Availability: InStock
Rating: 5 (17 reviews)

Cat.No.S7766

Cabotegravir (GSK744, GSK1265744, S/GSK1265744) is a long-acting HIV integrase inhibitor against a broad range of HIV subtypes. It inhibits the HIV-1 integrase catalyzed strand transfer reaction with an IC50 of 3.0 nM and is in Phase 2.

Chemical Structure

Molecular Weight: 405.35

Jump to Mechanism of Action Cell Culture & Working Concentration Solubility Chemical Information, Storage & Stability Specificity

Quality Control

Batch: Purity: 99.90%

99.90

Related Targets	Bacterial Antibiotics Anti-infection Fungal Antiviral COVID-19 Parasite Reverse Transcriptase HIV HCV Protease SARS-CoV HIV Protease Influenza Virus β-lactamase HBV CMV Neuraminidase HCV HSV RSV Enterovirus Thioredoxin Reductase 3C-Like Protease Ribosomal Peptidyl Transferase HPV
Related Products	MK-2048 BMS-707035

Cell Culture, Treatment & Working Concentration

Cell Lines	Assay Type	Incubation Time	Activity Description	PMID
HEK293T	Antiviral assay	2 days	Antiviral activity against pseudo Human immunodeficiency virus infected in HEK293T cells after 2 days, IC50 = 0.0005 μM.	23845180
MT4	Antiviral assay	4 to 5 days	Antiviral activity against Human immunodeficiency virus 1 3B infected in human MT4 cells after 4 to 5 days by bioluminescence assay, IC50 = 0.0013 μM.	23845180
HEK293T	Antiviral assay	2 days	Antiviral activity against pseudo Human immunodeficiency virus infected in HEK293T cells after 2 days in presence of human serum albumin, IC50 = 0.03 μM.	23845180
Click to View More Cell Line Experimental Data

Chemical Information, Storage & Stability

Molecular Weight	405.35	Formula	C₁₉H₁₇F₂N₃O₅	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	1051375-10-0	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	GSK744, S/GSK1265744			Smiles	CC1COC2N1C(=O)C3=C(C(=O)C(=CN3C2)C(=O)NCC4=C(C=C(C=C4)F)F)O

Solubility

In vitro
Batch:

DMSO : 30 mg/mL ( (74.01 mM) Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Mechanism of Action

Targets/IC₅₀/Ki	HIV integrase ^[1]
In vitro	Cabotegravir (GSK1265744) inhibits HIV replication with EC50 of 0.22 nM and 0.34-1.3 nM against HIV-1 Ba-L and NL432, respectively. It produces cytotoxicity with CC50 of 6.4, 5.0, 9.2, and 13 μM in proliferating IM-9, U-937, MT-4, and Molt-4 cell lines, respectively. ^[1]
Kinase Assay	In vitro strand transfer assay
Kinase Assay	The inhibitory concentrations of Cabotegravir (GSK1265744) are measured in a strand transfer assay using recombinant HIV IN. A complex of integrase and biotinylated donor DNA–streptavidin-coated SPA beads is formed by incubating 2 μM purified recombinant integrase with 0.66 μM biotinylated donor DNA–4 mg/mL streptavidin-coated SPA beads in 25 mM sodium MOPS pH 7.2, 23 mM NaCl, and 10 mM MgCl₂ for 5 minutes at 37°C. These beads are spun down and preincubated with diluted INSTIs for 60 minutes at 37°C. Next, [³H]-labeled target DNA substrate is added to give a final concentration of 7 nM substrate, and the strand transfer reaction is incubated at 37°C for 25 to 45 minutes, which allowed for a linear increase in strand transfer of donor DNA to radiolabeled target DNA. The signal is read using a Wallac MicroBeta scintillation plate reader.
In vivo	Cabotegravir (GSK1265744) (50 mg/kg) treatment protects rhesus macaques against three high-dose SHIV challenges. ^[2]
References	https://pubmed.ncbi.nlm.nih.gov/25367908/ https://pubmed.ncbi.nlm.nih.gov/25589630/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT06319105	Recruiting	Oral Pre-exposure Prophylaxis (PrEP)\|Long-acting Injectable Cabotegravir for PrEP	Georgetown University\|AIDS Vaccine Advocacy Coalition\|Centers for Disease Control and Prevention\|Center for the Development of People\|Cooper/Smith\|Elizabeth Glaser Pediatric AIDS Foundation\|Family Health Services\|Healthqual\|Johns Hopkins Research Project Malawi\|Johns Hopkins Bloomberg School of Public Health\|Kamuzu University of Health Sciences\|Blantyre District Health Office Malawi\|Lilongwe District Health Office Malawi\|Lighthouse Trust\|Ministry of Health Malawi\|National AIDS Commission Malawi\|Pakachere Institute of Health and Development Communication\|Partners in Hope\|Population Services International\|University of North Carolina\|United States Agency for International Development (USAID)\|United States President''s Emergency Plan for AIDS Relief\|Quantitative Engineering Design\|Clinton Health Access Initiative-Malawi	March 26 2024	--
NCT06104306	Recruiting	HIV-1-infection	Gilead Sciences	December 13 2023	Phase 4
NCT05986084	Recruiting	Pre-Exposure Prophylaxis (PrEP)\|Breast Feeding	Beth Israel Deaconess Medical Center\|Botswana Harvard AIDS Institute Partnership\|Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)\|ViiV Healthcare	November 30 2023	Phase 4

Tech Support

Handling Instructions

Tel: +1-832-582-8158 Ext:3

If you have any other enquiries, please leave a message.

C1=C0/X	C1:	LOG(C1):
C2=C1/X	C2:	LOG(C2):
C3=C2/X	C3:	LOG(C3):
C4=C3/X	C4:	LOG(C4):
C5=C4/X	C5:	LOG(C5):
C6=C5/X	C6:	LOG(C6):
C7=C6/X	C7:	LOG(C7):
C8=C7/X	C8:	LOG(C8):