STX-241   Click here for help

GtoPdb Ligand ID: 13828

Synonyms: PFL-241 | PFL241 | STX241
Compound class: Synthetic organic
Comment: STX-241 is an oral, brain-penetrant EGFR inhibitor. It is designed for activity in solid tumours with the EGFRC797S mutation that confers osimertinib resistance, in addition to EGFR exon 19 or 21 alterations.
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/). All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 8
Hydrogen bond donors 3
Rotatable bonds 7
Topological polar surface area 96.34
Molecular weight 439.9
XLogP 1.08
No. Lipinski's rules broken 0

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)

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Canonical SMILES CC1=NC=CC(=N1)C2=C(C3=C(C(=CNC3=O)CCOC)N2)NC4=C(C(=CC=C4)Cl)OC
Isomeric SMILES COCCC1=CNC(=O)C2=C1NC(=C2NC3=CC=CC(Cl)=C3OC)C4=NC(C)=NC=C4
InChI InChI=1S/C22H22ClN5O3/c1-12-24-9-7-15(26-12)19-20(27-16-6-4-5-14(23)21(16)31-3)17-18(28-19)13(8-10-30-2)11-25-22(17)29/h4-7,9,11,27-28H,8,10H2,1-3H3,(H,25,29)
InChI Key MPNJSBCDWRRQSK-UHFFFAOYSA-N

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
No information available.
Summary of Clinical Use Click here for help
STX-241 is an investigational agent that is being evaluated for potential to treat advanced or metastatic non-small cell lung cancer (NSCLC) tumours with confirmed EGFR exon 19 or 21 mutations alongside the EGFR inhibitor resistance mutation C797S.
Clinical Trials
Clinical Trial ID Title Type Source Comment References
NCT06567015 Study of FIH of STX-241 in Locally Advanced or Metastatic NSCLC Resistant to EGFR TKIs Phase 1/Phase 2 Interventional Pierre Fabre Medicament