clozapine   Click here for help

GtoPdb Ligand ID: 38

Synonyms: Clorazil® | HF-1854
Approved drug
clozapine is an approved drug (FDA (1989))
Compound class: Synthetic organic
Comment: Note that PubChem CID 2818 has different double bond structure on the central heptane ring which results in a different InChIKey. Our structure is an exact match for the chemical structure in the INN record for this compound.

The major active metabolite of clozapine is N-desmethylclozapine.
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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

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View more information in the IUPHAR Pharmacology Education Project: clozapine

clozapine 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 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 4
Hydrogen bond donors 1
Rotatable bonds 1
Topological polar surface area 30.87
Molecular weight 326.13
XLogP 3.86
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 CN1CCN(CC1)C1=Nc2cc(Cl)ccc2Nc2c1cccc2
Isomeric SMILES CN1CCN(CC1)C1=Nc2cc(Cl)ccc2Nc2c1cccc2
InChI InChI=1S/C18H19ClN4/c1-22-8-10-23(11-9-22)18-14-4-2-3-5-15(14)20-16-7-6-13(19)12-17(16)21-18/h2-7,12,20H,8-11H2,1H3
InChI Key QZUDBNBUXVUHMW-UHFFFAOYSA-N
Selectivity at GPCRs
Key to terms and symbols Click column headers to sort
Target Sp. Type Action Value Parameter Concentration range (M) Reference
H1 receptor Hs Antagonist Antagonist 8.8 – 9.6 pKi - 5,16,32
⤷ pKi 8.8 – 9.6 [5,16,32]
5-HT2A receptor Rn Antagonist Inverse agonist 8.9 pKi - 6
⤷ pKi 8.9 [6]
5-HT2B receptor Hs Antagonist Antagonist 8.0 – 8.8 pKi - 11,23,43
⤷ pKi 8.0 – 8.8 [11,23,43]
5-HT2A receptor Primary target of this compound Hs Antagonist Inverse agonist 7.6 – 9.0 pKi - 11,16,23,32,42
⤷ pKi 7.6 – 9.0 [11,16,23,32,42]
α1A-adrenoceptor Hs Antagonist Antagonist 8.1 – 8.3 pKi - 27,44
⤷ pKi 8.1 – 8.3 [27,44]
5-HT2C receptor Hs Antagonist Inverse agonist 7.4 – 8.7 pKi - 7,10-11,16,23,42
⤷ pKi 7.4 – 8.7 [7,10-11,16,23,42]
5-HT6 receptor Hs Antagonist Inverse agonist 7.8 – 8.1 pKi - 1,4,13,28
⤷ pKi 7.8 – 8.1 [1,4,13,28]
5-HT6 receptor Rn Antagonist Inverse agonist 7.5 – 8.4 pKi - 2-4,14,23-24,30
⤷ pKi 7.5 – 8.4 [2-4,14,23-24,30]
α1B-adrenoceptor Hs Antagonist Antagonist 7.4 – 8.2 pKi - 27,44
⤷ pKi 7.4 – 8.2 [27,44]
5-HT7 receptor Rn Antagonist Inverse agonist 7.2 – 8.2 pKi - 14,30-31,34
⤷ pKi 7.2 – 8.2 [14,30-31,34]
α1D-adrenoceptor Hs Antagonist Antagonist 7.7 pKi - 44
⤷ pKi 7.7 [44]
5-HT7 receptor Hs Antagonist Inverse agonist 7.2 – 7.8 pKi - 15,28,41
⤷ pKi 7.2 – 7.8 [15,28,41]
D4 receptor Hs Antagonist Antagonist 7.5 pKi - 17
⤷ pKi 7.5 [17]
5-HT7 receptor Mm Antagonist Inverse agonist 7.4 pKi - 26
⤷ pKi 7.4 [26]
5-HT1F receptor Hs Agonist Full agonist 6.9 pKi - 32
⤷ pKi 6.9 [32]
D1 receptor Hs Antagonist Antagonist 6.9 pKi - 38
⤷ pKi 6.9 [38]
5-HT1A receptor Hs Agonist Full agonist 6.8 – 6.9 pKi - 23,25,32
⤷ pKi 6.8 – 6.9 [23,25,32]
D5 receptor Hs Antagonist Antagonist 6.6 pKi - 38
⤷ pKi 6.6 [38]
H4 receptor Hs Antagonist Antagonist 6.2 – 6.7 pKi - 18-20,45
⤷ pKi 6.2 – 6.7 [18-20,45]
5-HT1D receptor Hs Agonist Full agonist 6.4 pKi - 32
⤷ pKi 6.4 [32]
5-ht1e receptor Hs Agonist Full agonist 6.4 pKi - 32
⤷ pKi 6.4 [32]
D2 receptor Primary target of this compound Hs Antagonist Antagonist 5.8 – 6.9 pKi - 8,22,33,35,40
⤷ pKi 5.8 – 6.9 [8,22,33,35,40]
5-HT5A receptor Hs Antagonist Antagonist 6.0 – 6.5 pKi - 9,29
⤷ pKi 6.0 – 6.5 [9,29]
5-HT1B receptor Hs Agonist Full agonist 6.2 pKi - 32
⤷ pKi 6.2 [32]
D2 receptor Rn Antagonist Antagonist 6.2 pKi - 36
⤷ pKi 6.2 [36]
H3 receptor Rn Antagonist Antagonist 5.8 pKi - 21
⤷ pKi 5.8 [21]
D3 receptor Hs Antagonist Antagonist 5.2 – 6.3 pKi - 8,35
⤷ pKi 5.2 – 6.3 [8,35]
D3 receptor Rn Antagonist Antagonist 5.7 pKi - 36
⤷ pKi 5.7 [36]
H4 receptor Rn Antagonist Antagonist 5.7 pKi - 20
⤷ pKi 5.7 [20]
H4 receptor Mm Antagonist Antagonist 5.5 pKi - 20
⤷ pKi 5.5 [20]
5-HT5A receptor Mm Antagonist Antagonist 5.3 pKi - 9
⤷ pKi 5.3 [9]
M1 receptor Hs Allosteric modulator Positive 7.9 pIC50 - 39
⤷ pIC50 7.9 [39]
M1 receptor Rn Allosteric modulator Positive 7.7 pIC50 - 37
⤷ pIC50 7.7 [37]
Selectivity at ion channels
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Target Sp. Type Action Value Parameter Concentration range (M) Reference
Kir3.2 Mm Gating inhibitor Antagonist 3.8 pEC50 - 12
⤷ pEC50 3.8 [12]
Voltage: -70.0 mV