nefextinib   Click here for help

GtoPdb Ligand ID: 13213

Synonyms: example 31 [CN106366093A] | MAX-40279 | MAX-40279-01 | MAX40279
Compound class: Synthetic organic
Comment: The chemical structure for INN nefextinib (proposed INN list 130, Feb. 2024) matches PubChem CID 126495573, and onto the company research code MAX-40279 which is an orally bioavailable, dual FLT3/FGFR receptor tyrosine kinase inhibitor.
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species
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 CDK toolkit. 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 7
Hydrogen bond donors 2
Rotatable bonds 5
Topological polar surface area 98.91
Molecular weight 438.52
XLogP 1.28
No. Lipinski's rules broken 0
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.

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Canonical SMILES CC1=C(C2=C(C=C(C=C2)F)OC)C3=NC(=NC=C3S1)NC4=CN(C5CCNCC5)N=C4
Isomeric SMILES CC1=C(C2=NC(=NC=C2S1)NC3=CN(N=C3)C4CCNCC4)C5=C(C=C(C=C5)F)OC
InChI InChI=1S/C22H23FN6OS/c1-13-20(17-4-3-14(23)9-18(17)30-2)21-19(31-13)11-25-22(28-21)27-15-10-26-29(12-15)16-5-7-24-8-6-16/h3-4,9-12,16,24H,5-8H2,1-2H3,(H,25,27,28)
InChI Key AVIOBQFPAGEICQ-UHFFFAOYSA-N
Bioactivity Comments
Nefextinib (MAX-40279) inhibits proliferation in FGFR/FLT3-overexpressing tumour cells. In addition to stated targets this compound inhibits a number of Src family kinases in vitro [1].
Selectivity at enzymes
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
LCK proto-oncogene, Src family tyrosine kinase Hs Inhibitor Inhibition 8.3 pIC50 - 1
⤷ pIC50 8.3 (IC50 5.5x10-9 M) [1]
YES proto-oncogene 1, Src family tyrosine kinase Hs Inhibitor Inhibition 8.2 pIC50 - 1
⤷ pIC50 8.2 (IC50 5.8x10-9 M) [1]
SRC proto-oncogene, non-receptor tyrosine kinase Hs Inhibitor Inhibition 8.2 pIC50 - 1
⤷ pIC50 8.2 (IC50 6x10-9 M) [1]
Selectivity at catalytic receptors
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
fms related receptor tyrosine kinase 3 Hs Inhibitor Inhibition 9.5 – 9.7 pIC50 - 1
⤷ pIC50 9.7 (IC50 2x10-10 M) [1]
Description: Inhibitor potency for FLT3 D835Y mutant
pIC50 9.6 (IC50 2.8x10-10 M) [1]
Description: Inhibition potency for WT FLT3
pIC50 9.5 (IC50 3.4x10-10 M) [1]
Description: Inhibitor potency for FLT3-ITD fusion