Catalog No. size PriceQuantity
M6683-2 2mg solid $77
M6683-10 10mg solid $324


Cas:1421373-65-0 (free base)

         1421373-66-1 (mesylate)

Product Information

AZD-9291, also known as Osimertinib and Mereletinib, is a third-generation EGFR inhibitor, showed promise in preclinical studies and provides hope for patients with advanced lung cancers that have become resistant to existing EGFR inhibitors. AZD9291 is highly active in preclinical models and is well tolerated in animal models. It inhibits both activating and resistant EGFR mutations while sparing the normal form of EGFR that is present in normal skin and gut cells, thereby reducing the side effects encountered with currently available medicines. AZD-9291 was approved in Nov. 2015 by FDA.


Chemical Formula: C28H33N7O2


Exact Mass: 499.26957


Molecular Weight: 499.60732


Elemental Analysis: C, 67.31; H, 6.66; N, 19.62; O, 6.40





AZD 9291


AZD-9291 freebase


Osimertinib free base

trade name Tagrisso


Chemical Name:  



InChi Key:



InChi Code:    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 Code:




Technical Data:


Appearance: Brown to yellow solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001


In Vitro

AZD-9291 shows similar potency to early generation tyrosine kinase inhibitor (TKIs) in inhibiting EGFR phosphorylation in EGFR cells harboring sensitising EGFR mutants including PC-9 (ex19del), H3255 (L858R) and H1650 (ex19del), with mean IC50 values ranging from 13 to 54 nM for AZD-9291. AZD-9291 also potently inhibits phosphorylation of EGFR in T790M mutant cell lines (H1975 (L858R/T790M), PC-9VanR (ex19del/T790M), with mean IC50 potency less than 15 nM.


In Vivo

The tumor-bearing mice are treated with AZD-9291 (5 mg/kg/day) for one to two weeks. Within days of treatment, 5 of 5 C/L858R mice displays nearly 80% reduction in tumor volume by magnetic resonance imaging MRI after therapy with AZD-9291, while 5 of 5 mice treated with vehicle shows tumor growth. AZD-9291 demonstrates improved rat PK, reduced hERG affinity, and improved IGF1R margins relative to the previously described compounds, and so this compound is selected for further investigation. AZD-9291 also offers an additional degree of broader chemical and profile diversity when compared to the previously described lead compounds. Upon dosing AZD-9291 in three efficacy models, The comparable efficacy is observed at relatively low doses (10 mg/kg per day). The excellent efficacy is also observed when AZD-9291 is dosed at 5 mg/kg per day.





  1. Zhang Z, Yang S, Wang Q. Impact of MET alterations on targeted therapy with EGFR-tyrosine kinase inhibitors for EGFR-mutant lung cancer. Biomark Res. 2019 Nov 21;7:27. doi: 10.1186/s40364-019-0179-6. eCollection 2019. Review. PubMed PMID: 31832192; PubMed Central PMCID: PMC6873421.


  1. Shetty V, Babu S. Management of CNS metastases in patients with EGFR mutation-positive NSCLC. Indian J Cancer. 2019 Nov;56(Supplement):S31-S37. doi: 10.4103/ijc.IJC_455_19. Review. PubMed PMID: 31793440.


  1. Doval DC, Desai CJ, Sahoo TP. Molecularly targeted therapies in non-small cell lung cancer: The evolving role of tyrosine kinase inhibitors. Indian J Cancer. 2019 Nov;56(Supplement):S23-S30. doi: 10.4103/ijc.IJC_449_19. Review. PubMed PMID: 31793439.


  1. Rebuzzi SE, Alfieri R, La Monica S, Minari R, Petronini PG, Tiseo M. Combination of EGFR-TKIs and chemotherapy in advanced EGFR mutated NSCLC: Review of the literature and future perspectives. Crit Rev Oncol Hematol. 2019 Oct 31:102820. doi: 10.1016/j.critrevonc.2019.102820. [Epub ahead of print] Review. PubMed PMID: 31785991.


  1. Zhu VW, Klempner SJ, Ou SI. Receptor Tyrosine Kinase Fusions as an Actionable Resistance Mechanism to EGFR TKIs in EGFR-Mutant Non-Small-Cell Lung Cancer. Trends Cancer. 2019 Nov;5(11):677-692. doi: 10.1016/j.trecan.2019.09.008. Epub 2019 Oct 29. Review. PubMed PMID: 31735287.


Products are for research use only. Not for human use.



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