etrasimod   Click here for help

GtoPdb Ligand ID: 9331

Synonyms: APD-334 | APD334 | APD334-003 | compound 4 [PMID: 25516790] | Velsipity®
Approved drug Immunopharmacology Ligand
etrasimod is an approved drug (FDA (2023))
Compound class: Synthetic organic
Comment: Etrasimod (APD334) is a centrally available, selective S1P1 receptor agonist [2]. APD334 is being investigated for clinical efficacy as an immunosuppressant for the treatment of autoimmune diseases.
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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 2
Hydrogen bond donors 2
Rotatable bonds 7
Topological polar surface area 62.32
Molecular weight 457.19
XLogP 6.56
No. Lipinski's rules broken 1
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 OC(=O)CC1CCc2c1[nH]c1c2cc(cc1)OCc1ccc(c(c1)C(F)(F)F)C1CCCC1
Isomeric SMILES OC(=O)C[C@H]1CCc2c1[nH]c1c2cc(cc1)OCc1ccc(c(c1)C(F)(F)F)C1CCCC1
InChI InChI=1S/C26H26F3NO3/c27-26(28,29)22-11-15(5-8-19(22)16-3-1-2-4-16)14-33-18-7-10-23-21(13-18)20-9-6-17(12-24(31)32)25(20)30-23/h5,7-8,10-11,13,16-17,30H,1-4,6,9,12,14H2,(H,31,32)/t17-/m1/s1
InChI Key MVGWUTBTXDYMND-QGZVFWFLSA-N
Bioactivity Comments
In in vitro β-arrestin recruitment assays APD334 has no measurable activity at S1P2 and S1P3 receptors, and low activity at S1P4 receptors [2]. EC50 for S1P5 receptors is around 4-fold lower than for the primary target S1P1. APD334 has similar ability to induce cAMP accumulation across S1P1 receptors from species including human, rat, mouse, monkey and dog. APD334 produces robust lymphocyte lowering in several preclinical species, and is effective in a mouse experimental autoimmune encephalomyelitis (EAE) model of multiple sclerosis [2].
Selectivity at GPCRs
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
S1P1 receptor Primary target of this compound Hs Agonist Agonist 8.2 – 9.2 pEC50 - 2-3
⤷ pEC50 9.2 (EC50 5.7x10-10 M) [3]
pEC50 8.2 (EC50 6.1x10-9 M) [2]
Description: In a β-arrestin recruitment assay.
S1P5 receptor Hs Agonist Agonist 7.6 pEC50 - 2
⤷ pEC50 7.6 (EC50 2.44x10-8 M) [2]
Description: In a β-arrestin recruitment assay.
S1P4 receptor Hs Agonist Agonist 6.8 pEC50 - 1-2
⤷ pEC50 6.8 (EC50 1.47x10-7 M) [1-2]
Description: In a β-arrestin recruitment assay.