AZD-9291

 CAS No.: 1421373-65-0  Cat No.: BP-300113  Purity: 98% 4.5  

AZD-9291, also known as osimertinib, is a covalent EGFR kinase ligand that engages the ATP-binding region of mutant EGFR proteins and provides a well-defined warhead for EGFR-targeted PROTAC design. In a bifunctional degrader, the AZD-9291-derived moiety binds EGFR, while a linker connects it to an E3 ligase recruiter, enabling induced proximity between receptor kinase and ubiquitination machinery. The intended mechanism is EGFR ubiquitination and proteasome-dependent depletion, allowing researchers to evaluate receptor removal rather than catalytic inhibition alone. This approach is useful for studying mutant EGFR signaling persistence, receptor scaffold functions, pathway rewiring, and degradation selectivity across EGFR variants. AZD-9291 is valuable for EGFR degrader development, covalent warhead comparison, linker placement studies, target engagement analysis, and receptor tyrosine kinase degradation platform optimization.

AZD-9291

Structure of 1421373-65-0

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Ligand for Target Protein
Molecular Formula
C28H33N7O2
Molecular Weight
499.61
Related CAS
1421373-66-1 (mesylate)
Appearance
White to off-white powder

* For research and manufacturing use only. Not for human or clinical use.

SizePriceStockQuantity
2.5 g $365 In stock
5 g $629 In stock

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  • Comprehensive PROTAC Platform
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Popular Publications Citing BOC Sciences Products
Purity
98%
Appearance
White to off-white powder
Application
For research used only
Synonyms
Mereletinib; AZD9291; AZD 9291; Osimertinib
Boiling Point
N/A
Density
1.2±0.1 g/cm3
InChI Key
DUYJMQONPNNFPI-UHFFFAOYSA-N
InChI
InChI=1S/C28H33N7O2/c1-7-27(36)30-22-16-23(26(37-6)17-25(22)34(4)15-14-33(2)3)32-28-29-13-12-21(31-28)20-18-35(5)24-11-9-8-10-19(20)24/h7-13,16-18H,1,14-15H2,2-6H3,(H,30,36)(H,29,31,32)
SMILES
CN1C=C(C2=CC=CC=C21)C3=NC(=NC=C3)NC4=C(C=C(C(=C4)NC(=O)C=C)N(C)CCN(C)C)OC
Mechanism

Target: This ligand targets mutant and wild-type epidermal growth factor receptor (EGFR) kinase domains in biochemical or cellular target-engagement studies.

Mechanism of Action: Used as the target-protein recognition element, this ligand provides the binding interface for mutant and wild-type epidermal growth factor receptor (EGFR) kinase domains. In PROTAC design, a derivatizable position on the ligand can be connected through an optimized linker to an E3 ligase ligand, such as a CRBN, VHL, or IAP recruiter, while preserving productive target engagement. The resulting bifunctional molecule brings mutant into proximity with the recruited E3 ligase, enabling ternary-complex formation. If the complex has favorable geometry and residence time, target lysine ubiquitination is promoted, leading to proteasome-dependent degradation in experimental systems.

Applications

• PROTAC-Mediated Degradation: AZD-9291 can be used as a ligand module to construct PROTACs that recruit an E3 ligase and drive targeted degradation of a chosen protein of interest. By tuning linker length and attachment chemistry, researchers can optimize ternary complex formation, ubiquitination efficiency, and degradation potency while minimizing off-target effects.

• Ternary Complex Optimization: In PROTAC discovery campaigns, AZD-9291-based chimeras can be evaluated for their ability to stabilize productive ternary complexes between the target protein and the recruited E3 ligase. Systematic structure–activity studies can correlate binding kinetics and interface complementarity with observed degradation profiles in cell-based assays.

• Pathway Mechanism Studies: AZD-9291-derived PROTACs are suitable tools to interrogate signaling pathways by enabling rapid, dose-dependent removal of the target protein. Time-course degradation experiments can distinguish degradation-driven phenotypes from transient inhibition, supporting mechanistic mapping of downstream transcriptional or functional changes.

• Selectivity and Resistance Mapping: Researchers can employ AZD-9291 as a ligand scaffold to generate PROTAC variants that probe isoform selectivity and resistance mechanisms. Comparative degradation across related proteins and engineered perturbations (e.g., E3 ligase expression or target mutations) can reveal determinants of efficacy and guide next-generation degrader design.

1.Osimertinib: A Review in T790M-Positive Advanced Non-Small Cell Lung Cancer.
Lamb YN;Scott LJ Target Oncol. 2017 Aug;12(4):555-562. doi: 10.1007/s11523-017-0519-0.
Osimertinib (Tagrisso™) is an oral, CNS-active, third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) that targets EGFR TKI-sensitizing mutations and, crucially, the T790M mutation that often underlies acquired resistance to EGFR TKI therapy. Osimertinib has been approved in numerous countries for use in patients with T790M-positive advanced NSCLC. In the pivotal, international AURA3 trial in patients with T790M-positive advanced NSCLC who had disease progression after EGFR TKI therapy, osimertinib treatment significantly prolonged progression-free survival (PFS; primary endpoint) compared with platinum-pemetrexed therapy at the time of the primary analysis. PFS results were consistent across predefined subgroups of patients, including those with CNS metastases at baseline. There was no difference between treatment groups in overall survival at 26% maturity. Objective response rates (ORRs) and patient-reported outcomes for prespecified symptoms were also significantly improved with osimertinib relative to platinum-pemetrexed, with CNS ORRs in patients with CNS metastases more than twofold higher in the osimertinib than in the platinum-pemetrexed group.
2.Can we define the optimal sequence of epidermal growth factor receptor tyrosine kinase inhibitors for the treatment of epidermal growth factor receptor-mutant nonsmall cell lung cancer?
Sun JM;Park K Curr Opin Oncol. 2017 Mar;29(2):89-96. doi: 10.1097/CCO.0000000000000350.
PURPOSE OF REVIEW: ;The most common mechanism of resistance to epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) is acquisition of the T790M gatekeeper mutation. Third-generation EGFR TKIs irreversibly inhibit EGFR mutants (EGFRm), especially T790M, while sparing wild-type EGFR. There are several third-generation EGFR TKIs under development, including osimertinib, CO-1686 (rociletinib), HM61713 (olmutinib), ASP8273, and EGF816. These third-generation EGFR TKIs have shown promising efficacy with favorable toxicity profiles in the management of advanced nonsmall cell lung cancer (NSCLC) with an acquired T790M mutation (EGFR). In the present review, we will discuss the evolving treatment landscape of EGFRm NSCLC.;RECENT FINDINGS: ;The LUX-Lung 7 study demonstrated superior progression-free survival, time-to-treatment failure, and objective response rate with afatinib versus gefitinib, but no significant overall survival improvement in TKI-naïve EGFRm NSCLC patients. In EGFRm NSCLC patients harboring T790M after treatment with first-generation or second-generation EGFR TKIs, third-generation EGFR TKIs showed robust efficacy with tolerable toxicity. The updated results of phase I studies have demonstrated encouraging activity of first-line osimertinib in patients with EGFRm NSCLC.
3.Second-Line Treatment of Non-Small Cell Lung Cancer: Clinical, Pathological, and Molecular Aspects of Nintedanib.
Corrales L;Nogueira A;Passiglia F;Listi A;Caglevic C;Giallombardo M;Raez L;Santos E;Rolfo C Front Med (Lausanne). 2017 Feb 28;4:13. doi: 10.3389/fmed.2017.00013. eCollection 2017.
Lung carcinoma is the leading cause of death by cancer in the world. Nowadays, most patients will experience disease progression during or after first-line chemotherapy demonstrating the need for new, effective second-line treatments. The only approved second-line therapies for patients without targetable oncogenic drivers are docetaxel, gemcitabine, pemetrexed, and erlotinib and for patients with target-specific oncogenes afatinib, osimertinib, crizotinib, alectinib, and ceritinib. In recent years, evidence on the role of antiangiogenic agents have been established as important and effective therapeutic targets in non-small cell lung cancer (NSCLC). Nintedanib is a tyrosine kinase inhibitor targeting three angiogenesis-related transmembrane receptors (vascular endothelial growth factor, fibroblast growth factor, and platelet-derived growth factor). Several preclinical and clinical studies have proven the usefulness of nintedanib as an anticancer agent for NSCLC. The most important study was the phase III LUME-Lung 1 trial, which investigated the combination of nintedanib with docetaxel for second-line treatment in advanced NSCLC patients. The significant improvement in overall survival and the manageable safety profile led to the approval of this new treatment in Europe.
ConcentrationVolumeMass1 mg5 mg10 mg
1 mM2.0016 mL10.0078 mL20.0156 mL
5 mM0.4003 mL2.0016 mL4.0031 mL
10 mM0.2002 mL1.0008 mL2.0016 mL
50 mM0.0400 mL0.2002 mL0.4003 mL

AZD-9291 is an EGFR ligand containing an acrylamide covalent warhead. It can inform EGFR-directed degrader design when linker installation avoids consuming the electrophilic binding group.

Structure: AZD-9291, also known as osimertinib, is an EGFR ligand containing an aminopyrimidine core, indole substituent, methoxy aryl group, dimethylaminoethyl side chain, and an acrylamide electrophile. The acrylamide acts as a covalent warhead for cysteine-targeted kinase engagement.

Reactivity: For EGFR-directed PROTAC construction, the aminopyrimidine recognition core and acrylamide warhead should be preserved when covalent binding is intended. Linker installation is commonly explored from the dimethylaminoethyl or aryl substituent region in analogs rather than from the warhead itself. Alkyl, PEG, amide, carbamate, or tertiary-amine-compatible linkers may be connected to CRBN, VHL, or IAP ligands after confirming that the linker does not impair EGFR binding or covalent reactivity.

Can you tell me the pharmacokinetics of AZD-9291 ?

Yes, I can. After oral administration, AZD-9291 is rapidly absorbed from the gastrointestinal tract. AZD-9291 undergoes extensive metabolism in the liver by various enzymes, primarily by cytochrome P450 (CYP) 3A enzymes, including CYP3A4 and CYP3A5. The elimination half-life of AZD-9291 is approximately 48 hours.

23/2/2020

Dear Sir, please give information about the biological activity of AZD-9291. Thanks.

AZD-9291 selectively targets and inhibits the activity of mutated EGFR tyrosine kinase enzymes, including the T790M mutation, which is commonly associated with resistance to other EGFR TKIs.

20/11/2020

I want to purchase this material. Does AZD-9291 reduce cancer cell growth ?

Thank you for choosing us! AZD 9291 selectively inhibits the proliferation of mutant EGFR-containing non-small cell lung cancer (NSCLC) cells, including H1975 cells containing the L858R activating and T790M resistance mutations.

4/6/2021

suppress tumour growth

This compound worked perfectly. AZD-9291 induces tumor regression in a PC-9 mouse xenograft model when administered at doses ranging from 1 to 10 mg/kg.

19/9/2016

inhibit cell proliferation

Use it routinely in our lab and works well. AZD-9291 dramatically inhibits Ba/F3 cell proliferation with IC50 values of 6 nM.

28/8/2019

induce apoptosis

In my experiment, we found that AZD 9291 induces apoptosis in Ba/F3 cells (apoptosis rates of 40.9% and 90% in EGFR exon 19del+T790M, EGFR L858R+T790M respectively). Very useful for our study!

28/9/2020

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* Our calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
It is commonly abbreviated as: C1V1 = C2V2

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Tip: Chemical formula is case sensitive. C22H30N4O c22h30n40
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