pemirolast   Click here for help

GtoPdb Ligand ID: 7329

Synonyms: Alamast® | Alegysal® | BMY-26517
Approved drug
pemirolast is an approved drug (FDA (1999))
Compound class: Synthetic organic
Comment: Pemirolast is an antihistamine.
Marketed formulations may contain pemirolast potassium salt (PubChem CID 443866).
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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Click here for structure editor
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 5
Hydrogen bond donors 1
Rotatable bonds 1
Topological polar surface area 88.83
Molecular weight 228.08
XLogP 1.81
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 Cc1cccn2c1ncc(c2=O)c1n[nH]nn1
Isomeric SMILES Cc1cccn2c1ncc(c2=O)c1n[nH]nn1
InChI InChI=1S/C10H8N6O/c1-6-3-2-4-16-9(6)11-5-7(10(16)17)8-12-14-15-13-8/h2-5H,1H3,(H,12,13,14,15)
InChI Key HIANJWSAHKJQTH-UHFFFAOYSA-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
Pemirolast is contained in opthalmic solutions used to treat the symptoms of seasonal allergic conjunctivitis, including itching, redness and swelling.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Pemirolast blocks the action of endogenous histamine at histamine H1 receptor. The drug inhibits eosinophil infiltration in the eye and prevents their release of inflammatory mediators.
External links Click here for help
For extended ADME data see the following:

Drugs.com