From August 18th 2026, GtoPdb will require users to register to use the website. Please see our blog post for more information.

clopidogrel (active metabolite)   Click here for help

GtoPdb Ligand ID: 1772

Immunopharmacology Ligand
Compound class: Synthetic organic
Comment: The structure shown here is of the active metabolite of clopidogrel, a pro-drug which is activated via 2-oxo-clopidogrel (PubChem CID 56848893) by cytochrome P450 enzymes in the liver. This compound is an irreversible antagonist of the platelet P2Y12 receptor [3]. The antagonist effect is stereoselective for the S-enantiomer shown here, whereas the R-enantiomer is almost inactive.
Click here for help

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.

✖

View interactive charts of activity data across species
2D Structure
Click here for help

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.

✖
Click here for structure editor
Physico-chemical Properties
Click here for help

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.

✖
Hydrogen bond acceptors 5
Hydrogen bond donors 1
Rotatable bonds 5
Topological polar surface area 105.64
Molecular weight 355.06
XLogP 1.96
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
Click here for help

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/)

✖
Canonical SMILES COC(=O)C(c1ccccc1Cl)N1CCC(C(=CC(=O)O)C1)S
Isomeric SMILES COC(=O)[C@H](c1ccccc1Cl)N1CCC(/C(=C\C(=O)O)/C1)S
InChI InChI=1S/C16H18ClNO4S/c1-22-16(21)15(11-4-2-3-5-12(11)17)18-7-6-13(23)10(9-18)8-14(19)20/h2-5,8,13,15,23H,6-7,9H2,1H3,(H,19,20)/b10-8-/t13?,15-/m0/s1
InChI Key CWUDNVCEAAXNQA-AWGNNQSZSA-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/)
Immunopharmacology Comments
Experimental evidence indicates that P2Y12 receptors play a critical role in Th17 differentiation (in mouse models of autoimmune inflammatory diseases), and that P2Y12-selective antagonists reverse Th17 differentiation and ameliorate inflammatory sequelae [2]. These findings suggest potential for P2Y12 antagonists as therapeutics for autoimmune diseases.