Name: Lersivirine (UK-453061)
Brand: Selleck Chemicals
SKU: S8055
Availability: InStock
Rating: 5 (1 reviews)

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Quality Control

Batch: Purity: 99.50%

99.50

Related Targets	Integrase Bacterial Antibiotics Anti-infection Fungal Antiviral COVID-19 Parasite HIV HCV Protease
Other Reverse Transcriptase Inhibitors	Dapivirine (TMC120) Fangchinoline 3'-Fluoro-3'-deoxythymidine (Alovudine) Salicylanilide Bifendate Ulonivirine 4-Chloro-2-(trifluoroacetyl)aniline hydrochloride

Solubility

In vitro
Batch:

DMSO : 62 mg/mL (199.77 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 62 mg/mL

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection 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.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.550mg/ml (4.99mM)	Taking the 1 mL working solution as an example, add 50 μL of 31 mg/ml clarified DMSO stock solution to 400 μL PEG300, mix evenly to clarify it; add 50 μL Tween80 to the above system, mix evenly to clarify it; then continue to add 500 μL ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.550mg/ml (4.99mM)	Taking the 1 mL working solution as an example, add 50 μL of 31 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.

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.

Chemical Information, Storage & Stability

Molecular Weight	310.35	Formula	C₁₇H₁₈N₄O₂	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	473921-12-9	--		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	N/A			Smiles	CCC1=C(C(=NN1CCO)CC)OC2=CC(=CC(=C2)C#N)C#N

Mechanism of Action

Targets/IC₅₀/Ki	NNRT
In vitro	Lersivirine (UK-453061) binds to HIV-1 wt reverse transcriptase (RT) with K_d of 624 nM. It is a very weak inhibitor of human DNA polymerase beta, with an extrapolated geometric mean IC50 of approximately 20 mM resulting in a predicted selectivity index of 166,000. This compound is able to inhibit HIV-1 virus replication in MT-2 cells infected with wt NL4-3, with an EC50 ranging from 5 nM to 35 nM against an MOI ranging from 0.005 to 0.5. It retains activity against 80% of viruses with genotypes containing K103N as a single NNRTI mutation (versus 7% for efavirenz), 57% of viruses with genotypes containing Y181C as a single NNRTI mutation (43% for efavirenz), and 46% of viruses with genotypes containing G190A as a single NNRTI mutation (0% for efavirenz). Lersivirine inhibits the replication of strain Ba-L in PBL, with a geometric mean EC50 equal to 3.38 nM (95% CI, 2.26 to 5.05 nM) and an EC90 equal to 9.87 nM (95% CI, 6.63 to 14.7 nM), with no cytotoxicity observed up to 50 μM. Combinations of it with drugs of the NRTI class (abacavir, didanosine, emtricitabine, lamivudine, tenofovir, and zidovudine) results in synergistic interactions.
Kinase Assay	RT enzyme assays
Kinase Assay	The activities of lersivirine (UK-453061) and efavirenz against wt RT (BH10 strain) are determined using a primer extension assay incorporating a DNA/RNA primer/template. The 5’biotinylated primer DNA is a 16mer oligo(dT), which is annealed to a poly(rA) template of approximately 300 bases in length. Incorporation of [³H]TTP(dTTP) by reverse transcription results in extension of the primer. During the reaction the primer/template is bound to a streptavidin-coated flashplate (NEN). The incorporated tritiated nucleotides can then stimulate the scintillant to produce a signal that is measured using a scintillation counter. Compounds that inhibit the RNA-dependent DNA polymerase activity of RT produce a reduced signal.
In vivo	In mice, Lersivirine (UK-453061) is not teratogenic.
References	[1] https://pubmed.ncbi.nlm.nih.gov/20660667/ [2] https://pubmed.ncbi.nlm.nih.gov/19748778/ [3] https://pubmed.ncbi.nlm.nih.gov/22447726/

Clinical Trial Information

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

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT01220232	Completed	Healthy Volunteers	Pfizer\|ViiV Healthcare	November 2010	Phase 1
NCT01230385	Completed	Healthy Volunteers	Pfizer\|ViiV Healthcare	October 2010	Phase 1
NCT00925535	Completed	Healthy Volunteers	Pfizer	May 2010	Phase 1
NCT01050751	Completed	Healthy Volunteers	Pfizer	February 2010	Phase 1

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Lersivirine (UK-453061) Reverse Transcriptase inhibitor

Chemical Structure

Molecular Weight: 310.35