tolazamide   Click here for help

GtoPdb Ligand ID: 6847

Synonyms: tolazolamide | Tolinase®
Approved drug
tolazamide is an approved drug (FDA (1986))
Compound class: Synthetic organic
Comment: A sulfonylurea family drug inhibiting sulfonylurea receptor 1 (ABCC8)/Kir6.2 (KCNJ11) potassium channel activity.
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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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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 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 86.89
Molecular weight 311.13
XLogP 2.69
No. Lipinski's rules broken 0
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 O=C(NS(=O)(=O)c1ccc(cc1)C)NN1CCCCCC1
Isomeric SMILES O=C(NS(=O)(=O)c1ccc(cc1)C)NN1CCCCCC1
InChI InChI=1S/C14H21N3O3S/c1-12-6-8-13(9-7-12)21(19,20)16-14(18)15-17-10-4-2-3-5-11-17/h6-9H,2-5,10-11H2,1H3,(H2,15,16,18)
InChI Key OUDSBRTVNLOZBN-UHFFFAOYSA-N
No information available.
Summary of Clinical Use Click here for help
Used as an adjunct to diet to lower the blood glucose in patients with non-insulin dependent diabetes mellitus whose hyperglycemia cannot be satisfactorily controlled by diet alone.
Mechanism Of Action and Pharmacodynamic Effects Click here for help
A sulphonylurea hypoglycemic agent with actions and uses similar to those of chlorpropamide. The sulfonyurea drugs appear to bind sulfonylurea receptors and it has been shown experimentally that tritiated glibenclamide can be used to pull out a 140 kDa protein identified as SUR1 (now known as ABCC8) [3]. SUR2 (ABCC9) has also been identified [1]. However, this is not the full mechanism of action as the functional channel has been characterised as a hetero-octamer formed by four SUR and four Kir6.2 subunits, with the Kir6.2 (KCNJ11) subunits forming the core ion pore and the SUR subunits providing the regulatory properties [2]. Co-expression of Kir6.2 with SUR1, reconstitutes the ATP-dependent K+ conductivity inhibited by the sulfonyureas [1].
External links Click here for help
For extended ADME data see the following:

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