Name: Efavirenz
Brand: Selleck Chemicals
SKU: S4685
Availability: InStock
Rating: 5 (15 reviews)

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Quality Control

Batch: Purity: 99.91%

99.91

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 Islatravir Lersivirine (UK-453061) 4-Chloro-2-(trifluoroacetyl)aniline hydrochloride

Solubility

In vitro
Batch:

DMSO : 63 mg/mL (199.57 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 63 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.
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.	7.500mg/ml (23.76mM)	Taking the 1 mL working solution as an example, add 50 μL of 150 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of 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.	7.500mg/ml (23.76mM)	Taking the 1 mL working solution as an example, add 50 μL of 150 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.
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.

Chemical Information, Storage & Stability

Molecular Weight	315.67	Formula	C₁₄H₉ClF₃NO₂	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	154598-52-4	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	DMP-266			SMILES	C1CC1C#CC2(C3=C(C=CC(=C3)Cl)NC(=O)O2)C(F)(F)F

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC₅₀/Ki	Reverse transcriptase
In vitro	Efavirenz has direct inhibitory effect on the mitochondrial respiratory function of cultured glioblastoma and differentiated neuroblastoma cell lines. ER stress markers, including CHOP and GRP78 expression (both protein and mRNA), phosphorylation of eIF2a, and presence of the spliced form of XBP1 are upregulated. This compound also enhances cytosolic Ca2+ content and induced morphological changes in the ER suggestive of ER stress. This response is greatly attenuated in cells with altered mitochondrial function (Rho). The effects of this chemical on the ER, and particularly in regard to the mitochondrial involvement, differs from those elicited by a standard pharmacological ER stressor.
In vivo	Efavirenz leads to arterial stiffening but, for the dose and duration tested, did not lead to elevated plaque progression in ApoE(-/-) mice.
References	[1] https://pubmed.ncbi.nlm.nih.gov/20039714/ [2] https://pubmed.ncbi.nlm.nih.gov/25925594/ [3] https://pubmed.ncbi.nlm.nih.gov/23792026/ [4] https://pubmed.ncbi.nlm.nih.gov/26050957/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-09-03)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT07482085	RECRUITING	Creutzfeldt-Jakob Disease	Xuanwu Hospital, Beijing	2026-04-14	PHASE3
NCT07631897	NOT_YET_RECRUITING	HIV; Art Therapy; TB - Tuberculosis	Shanghai Public Health Clinical Center	2026-06	PHASE4
NCT06823596	RECRUITING	Hiv	University of Toronto	2025-01-14
NCT05789173	RECRUITING	Drug-Drug Interaction	Indiana University	2023-10-06	EARLY_PHASE1
NCT07341672	NOT_YET_RECRUITING	Healthy Adult Subject	Sunshine Lake Pharma Co., Ltd.	2026-12-31	PHASE1
NCT05076682	RECRUITING	Triple-negative Breast Cancer	Fudan University	2022-06-30	PHASE2

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Efavirenz Reverse Transcriptase inhibitor

Chemical Structure

Molecular Weight: 315.67