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.
Structure of 1421373-65-0
* For research and manufacturing use only. Not for human or clinical use.
| Size | Price | Stock | Quantity |
|---|---|---|---|
| 2.5 g | $365 | In stock | |
| 5 g | $629 | In stock |
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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.
| ConcentrationVolumeMass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 1 mM | 2.0016 mL | 10.0078 mL | 20.0156 mL |
| 5 mM | 0.4003 mL | 2.0016 mL | 4.0031 mL |
| 10 mM | 0.2002 mL | 1.0008 mL | 2.0016 mL |
| 50 mM | 0.0400 mL | 0.2002 mL | 0.4003 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
* 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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