PF-04905428   Click here for help

GtoPdb Ligand ID: 9062

Synonyms: CE-224,535 | CE-224535 | compound 3 [PMID: 21782426] | compound 33 [PMID: 21565499]
Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: PF-04905428 is an investigational purinergic receptor 2 (P2X7) antagonist [2,4], with potential antiinflammatory action in various conditions such as arthritis, allergies, asthma, COPD, autoimmune diseases and other disorders.. PF-04905428 is one of the compounds claimed in patent US6974812 [1].

PF-04905428 is commercially available from our sponsors

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 9
Topological polar surface area 135.16
Molecular weight 480.18
XLogP 2.51
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 COCC(Cn1c(=O)cnn(c1=O)c1ccc(c(c1)C(=O)NCC1(O)CCCCCC1)Cl)O
Isomeric SMILES COC[C@@H](Cn1c(=O)cnn(c1=O)c1ccc(c(c1)C(=O)NCC1(O)CCCCCC1)Cl)O
InChI InChI=1S/C22H29ClN4O6/c1-33-13-16(28)12-26-19(29)11-25-27(21(26)31)15-6-7-18(23)17(10-15)20(30)24-14-22(32)8-4-2-3-5-9-22/h6-7,10-11,16,28,32H,2-5,8-9,12-14H2,1H3,(H,24,30)/t16-/m1/s1
InChI Key FUCKCIVGBCBZNP-MRXNPFEDSA-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
A Phase 3 clinical trial in patients with rheumatoid arthritis (RA: NCT00628095) has been completed. Results showed PF-04905428 (CE-224,535) was not effective in treating RA [3].
Mechanism Of Action and Pharmacodynamic Effects Click here for help
P2X7 receptor activation promotes inflammasome-mediated proteolytic processing of proIL-1β and release of the mature cytokine- a pro-inflammatory action. P2X7 receptor antagonists should block IL-1 posttranslational processing and reduce release of IL-1β- an anti-inflammatory action.
Clinical Trials
Clinical Trial ID Title Type Source Comment References
NCT00628095 Study of CE-224,535 A Twice Daily Pill To Control Rheumatoid Arthritis In Patients Who Have Not Totally Improved With Methotrexate Phase 2/Phase 3 Interventional Pfizer