nedocromil   Click here for help

GtoPdb Ligand ID: 7607

Synonyms: FPL-59002 | nedocromil sodium | Rapitil® | Tilade®
Approved drug Immunopharmacology Ligand
nedocromil is an approved drug (FDA (1992))
Compound class: Synthetic organic
Comment: Nedocromil is considered to be a mast cell stabilising drug. Chemically it belongs to the benzopyrone family of compounds. In the US, production of inhaled nedocromil was terminated in 2008.
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View more information in the IUPHAR Pharmacology Education Project: nedocromil

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 6
Hydrogen bond donors 2
Rotatable bonds 5
Topological polar surface area 126.81
Molecular weight 371.1
XLogP 5.15
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 CCCc1c2oc(cc(=O)c2cc2c1n(CC)c(cc2=O)C(=O)O)C(=O)O
Isomeric SMILES CCCc1c2oc(cc(=O)c2cc2c1n(CC)c(cc2=O)C(=O)O)C(=O)O
InChI InChI=1S/C19H17NO7/c1-3-5-9-16-10(13(21)7-12(18(23)24)20(16)4-2)6-11-14(22)8-15(19(25)26)27-17(9)11/h6-8H,3-5H2,1-2H3,(H,23,24)(H,25,26)
InChI Key RQTOOFIXOKYGAN-UHFFFAOYSA-N
No information available.
Summary of Clinical Use Click here for help
Used as an inhlation drug to alleviate bronchconstriction in asthma [1], and may be used in eye-drops to treat allergic eye reactions. The use of some formulations of this drug has been discontinued in the US.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
Nedocromil predominantly stabilises mast cells and inhibits their degranulation. This action supresses the release of histamine and tryptase, thus reducing the synthesis of pro-inflammatory prostaglandins and leukotrienes. The drug also inhibits the activity of other types of inflammatory cells (eg eosinophils, neutrophils, macrophages, monocytes, and platelets) which are associated with asthma. However, as mast cell stabilisation is not sufficient on its own to explain the anti-asthmatic activity of this chromone type drug, other as yet incompletely resolved mechanisms must be involved.
External links Click here for help
For extended ADME data see the following:

Electronic Medicines Compendium (eMC)
Drugs.com