Name: Irbesartan
Brand: Selleck Chemicals
SKU: S1507
Availability: InStock
Rating: 5 (7 reviews)

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Quality Control

Batch: Purity: 99.92%

99.92

Related Targets	CXCR Hedgehog/Smoothened PKA Adrenergic Receptor AChR 5-HT Receptor Histamine Receptor Dopamine Receptor Ras KRas
Other Angiotensin Receptor Inhibitors	PD123319 ML221 A-779 Fimasartan Olodanrigan (EMA401) Buloxibutid AVE 0991

Solubility

In vitro
Batch:

DMSO : 1 mg/mL (2.33 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : 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	30%PEG400 1 0.5%Tween80 2 5%propylene glycol Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	30.000mg/ml (70.01mM)	Taking the 1 mL working solution as an example, add 300 μL of 100 mg/ml clarified PEG400 stock solution to 5 μL of Tween80, mix evenly to clarify it; add 50 μL Propylene glycol to the above system, mix evenly to clarify it; then continue to add 645 μL ddH2O to adjust the volume. to 1 mL. 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	428.53	Formula	C₂₅H₂₈N₆O	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	138402-11-6	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	BMS-186295, SR-47436			SMILES	CCCCC1=NC2(CCCC2)C(=O)N1CC3=CC=C(C=C3)C4=CC=CC=C4C5=NNN=N5

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Features	Irbesartan is a longer acting AT1 receptor antagonist relative to losartan and valsartan.
Targets/IC₅₀/Ki	AT1 receptor 1.3 nM
In vitro	Irbesartan competes with angiotensin II (AII) for binding at the AT1 receptor subtype and antagonizes AII-induced contraction in rabbit aorta ring with IC50 of 4 nM. This compound has no affinity for AT2 receptors. It (10 μM) blocks angiotensin II induced increase in α_v, β₁, β₃, and β₅ integrins, osteopontin, and α-actinin mRNA and protein levels in rat cardiac fibroblasts, leading to the decrease of cell attachment to extracellular matrix (ECM) proteins. This chemical treatment markedly induces the expression of the adipogenic marker gene adipose protein 2 (aP2) in 3T3-L1 cells in a concentration-dependent manner with EC50 of 3.5 μM and 3.3-fold induction at the concentration of 10 μM. It (10 μM) markedly induces transcriptional activity of the peroxisome proliferator–activated receptor-γ (PPARγ) by 3.4-fold independent of its AT1 receptor blocking action. Pretreatment with this compound (~10 μM) decreases angiotensin II-induced apoptosis in rat vascular smooth muscle cells by blocking angiotensin II internalization in a concentrationdependent manner.
In vivo	Oral administration of Irbesartan (1 mg/kg) reduces angiotensin II (AII)-induced hypertension, equipotent with losartan in conscious normotensive rats, markedly more active than losartan (10 mg/kg) in normotensive cynomolgus monkeys. Administration of this compound (7 mg/kg/day) significantly prevents skeletal muscle apoptosis and muscle atrophy in rats with monocrotaline-induced congestive heart failure (CHF), which is involved with the decrease of TNFα level and attributed to AT1 receptor blocking.
References	[1] https://pubmed.ncbi.nlm.nih.gov/8230127/ [2] https://pubmed.ncbi.nlm.nih.gov/10642310/ [3] https://pubmed.ncbi.nlm.nih.gov/15117841/ [4] https://pubmed.ncbi.nlm.nih.gov/17509562/ [5] https://pubmed.ncbi.nlm.nih.gov/11331262/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-04-28)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT07555054	NOT_YET_RECRUITING	Chronic Kidney Disease	Jiangsu Hansoh Pharmaceutical Co., Ltd.	2026-05-21	PHASE2
NCT06660940	NOT_YET_RECRUITING	Diabetic Kidney Disease; Diabetic Retinopathy	Chinese PLA General Hospital	2024-10	PHASE4
NCT06635772	NOT_YET_RECRUITING	Immunoglobulin a Nephropathy	Hansoh BioMedical R&D Company	2024-11	PHASE2
NCT03476616	COMPLETED	Hypertension; Obesity	Hippocration General Hospital	2018-09-01	PHASE4
NCT05272878	ACTIVE_NOT_RECRUITING	Acute Kidney Injury	Assistance Publique - Hôpitaux de Paris	2022-11-22	PHASE3
NCT06208072	UNKNOWN	Primary Hypertension; Obesity	Hippocration General Hospital	2023-09-01

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Irbesartan Angiotensin Receptor antagonist

Chemical Structure

Molecular Weight: 428.53