(R)-ARN2508   Click here for help

GtoPdb Ligand ID: 9000

Synonyms: compound (-)-10r [PMID: 26774927] | example 19 [WO2014023643]
Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: (R)-ARN2508 is an experimental inhibitor of fatty acid amide hydrolase (FAAH) [2], claimed in patent WO2014023643 [1]. The compound series developed by Migliore et al. (2015) [2] is based on a hybrid scaffold combining structural motifs of the FAAH inhibitor URB597 and the COX inhibitor flurbiprofen. The (S) enantiomer ((S)-ARN2508) inhibits both FAAH and COX enzyme activities, whereas this (R) enantiomer only inhibits FAAH.
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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 4
Hydrogen bond donors 2
Rotatable bonds 11
Topological polar surface area 75.63
Molecular weight 387.18
XLogP 5.68
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 CCCCCCNC(=O)Oc1cccc(c1)c1ccc(cc1F)C(C(=O)O)C
Isomeric SMILES CCCCCCNC(=O)Oc1cccc(c1)c1ccc(cc1F)[C@H](C(=O)O)C
InChI InChI=1S/C22H26FNO4/c1-3-4-5-6-12-24-22(27)28-18-9-7-8-17(13-18)19-11-10-16(14-20(19)23)15(2)21(25)26/h7-11,13-15H,3-6,12H2,1-2H3,(H,24,27)(H,25,26)/t15-/m1/s1
InChI Key USQOVYLRWBOSQC-OAHLLOKOSA-N
Bioactivity Comments
When tested, the racemic mixture of (R) and (S) ARN2508 (compound 10r in [2]) gave IC50 values of 31nM for FAAH, 12nM for COX1 and 430nM for COX2 [2]. Note that the (S) enantiomer is the much more potent COX inhibitor, being ~14000 times more potent for COX1 and 1900 times more potent for COX2 than the (R) enantiomer.
Selectivity at enzymes
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
Fatty acid amide hydrolase Primary target of this compound Hs Inhibitor Inhibition 8.0 pIC50 - 2
⤷ pIC50 8.0 (IC50 9.9x10-9 M) [2]
COX-1 Hs Inhibitor Inhibition 5.4 pIC50 - 2
⤷ pIC50 5.4 (IC50 4x10-6 M) [2]
COX-2 Hs Inhibitor Inhibition 4.6 pIC50 - 2
⤷ pIC50 4.6 (IC50 2.28x10-5 M) [2]