Osimertinib mesylateProduct ingredient for Osimertinib
- Name
- Osimertinib mesylate
- Drug Entry
- Osimertinib
Osimertinib is an oral, third-generation epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) drug developed by AstraZeneca Pharmaceuticals.1,9 Its use is indicated for the treatment of metastatic non-small cell lung cancer (NSCLC) in cases where tumour EGFR expression is positive for the T790M mutation as detected by FDA-approved testing and which has progressed following therapy with a first-generation EGFR tyrosine kinase inhibitor. Approximately 10% of patients with NSCLC have a rapid and clinically effective response to EGFR-TKIs due to the presence of specific activating EGFR mutations within the tumour cells.2 More specifically, deletions around the LREA motif in exon 19 and exon 21 L858R point mutations are correlated with response to therapy.3
Development of third-generation EGFR-TKIs, such as osimertinib, has been in response to altered tumour resistance patterns following treatment and toxic side effects that impact patient quality of life. Treatment with first-generation EGFR-TKIs (gefitinib and erlotinib) has been associated with the development of resistance through activating mutations in the EGFR gene. Second-generation EGFR-TKIs (afatinib and dacomitinib) were then developed to be more potent inhibitors, although their use is associated with increased toxicity through nonspecific targeting of wild-type EGFR. In contrast, third-generation inhibitors are specific for the gate-keeper T790M mutations which increases ATP binding activity to EGFR and result in poor prognosis for late-stage disease. Furthermore, osimertinib has been shown to spare wild-type EGFR during therapy, thereby reducing non-specific binding and limiting toxicity.1,2,6
- Accession Number
- DBSALT001606
- Structure
- Synonyms
- Not Available
- UNII
- RDL94R2A16
- CAS Number
- 1421373-66-1
- Weight
- Average: 595.72
Monoisotopic: 595.257688493 - Chemical Formula
- C29H37N7O5S
- InChI Key
- FUKSNUHSJBTCFJ-UHFFFAOYSA-N
- InChI
- InChI=1S/C28H33N7O2.CH4O3S/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;1-5(2,3)4/h7-13,16-18H,1,14-15H2,2-6H3,(H,30,36)(H,29,31,32);1H3,(H,2,3,4)
- IUPAC Name
- N-(2-{[2-(dimethylamino)ethyl](methyl)amino}-4-methoxy-5-{[4-(1-methyl-1H-indol-3-yl)pyrimidin-2-yl]amino}phenyl)prop-2-enamide; methanesulfonic acid
- SMILES
- CS(O)(=O)=O.COC1=CC(N(C)CCN(C)C)=C(NC(=O)C=C)C=C1NC1=NC(=CC=N1)C1=CN(C)C2=CC=CC=C12
- External Links
- ChemSpider
- 32743638
- ChEBI
- 90948
- ChEMBL
- CHEMBL3545063
- Wikipedia
- Osimertinib
- Predicted Properties
Property Value Source Water Solubility 0.0224 mg/mL ALOGPS logP 4.47 ALOGPS logP 4.49 Chemaxon logS -4.4 ALOGPS pKa (Strongest Acidic) 13.64 Chemaxon pKa (Strongest Basic) 8.87 Chemaxon Physiological Charge 1 Chemaxon Hydrogen Acceptor Count 7 Chemaxon Hydrogen Donor Count 2 Chemaxon Polar Surface Area 87.55 Å2 Chemaxon Rotatable Bond Count 10 Chemaxon Refractivity 150.32 m3·mol-1 Chemaxon Polarizability 54.58 Å3 Chemaxon Number of Rings 4 Chemaxon Bioavailability 1 Chemaxon Rule of Five No Chemaxon Ghose Filter No Chemaxon Veber's Rule No Chemaxon MDDR-like Rule Yes Chemaxon