Name: Clozapine
Brand: Selleck Chemicals
SKU: S2459
Availability: InStock
Rating: 5 (10 reviews)

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Quality Control

Batch: Purity: 99.99%

99.99

Related Targets	Adrenergic Receptor AChR COX Calcium Channel Histamine Receptor Dopamine Receptor GABA Receptor TRP Channel Cholinesterase (ChE) GluR
Other 5-HT Receptor Inhibitors	Serotonin Hydrochloride (5-HT HCl) WAY-100635 Maleate Puerarin SB269970 HCl Ketanserin BRL-15572 Dihydrochloride Nuciferine RS-127445 Flopropione Azacyclonol

Solubility

In vitro
Batch:

DMSO : 65 mg/mL (198.88 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 65 mg/mL

Water : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
Mass value Mass unit	Concentration value Concentration unit	Volume value Volume unit	Molecular weight (g/mol)

Dilution Calculator Molecular Weight Calculator

In vivo batch selection In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	5.000mg/ml (15.30mM)	Taking the 1 mL working solution as an example, add 50 μL of 100 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	3.750mg/ml (11.47mM)	Taking the 1 mL working solution as an example, add 50 μL of 75 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg

Average weight of animals: g

Dosing volume per animal: μL

Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO

%

% Tween 80

% ddH₂O

% DMSO

+

%

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Chemical Information, Storage & Stability

Molecular Weight	326.82	Formula	C₁₈H₁₉ClN₄	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	5786-21-0	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	HF 1854, LX 100-129			SMILES	CN1CCN(CC1)C2=NC3=C(C=CC(=C3)Cl)NC4=CC=CC=C42

Read more about storage stability stock solution CAS number SMILES

Mechanism of Action

Targets/IC₅₀/Ki	5-HT2
In vitro	Clozapine (10, 20 mg/kg) significantly increases the number of Fos-positive neurons in the nucleus accumbens, medial prefrontal cortex and lateral septal nucleus. This compound induces zif268 but not c-fos mRNA in rat striatum, while Haloperidol induces c-Fos-like immunoreactivity in the caudate-putamen. It is more selective for D4 receptors compared to D2 receptors. This chemical is a mixed but weak D1/D2 antagonist. It produces a marked facilitation (300-400%) of NMDA-evoked responses in a concentration-dependent manner with EC50 of 14 nM. This compound, but not haloperidol, produces bursts of excitatory postsynaptic potentials (EPSPs), which are blocked by glutamate receptor antagonists, suggesting that these EPSPs are the result of increasing release of excitatory amino acids. It is a full agonist at the muscarinic M4 receptor (EC50 = 11 nM), producing inhibition of forskolin-stimulated cAMP accumulation. This chemical potently antagonizes agonist-induced responses at the other four muscarinic receptor subtypes.
In vivo	Clozapine exhibits an "inverted-U" shaped dose-response curve, reversing the apomorphine-induced loss of prepulse inhibition (PPI) at low doses but not at high doses in the rats. This compound decreases PPI independent of apomorphine treatment in the rats.
References	[1] https://pubmed.ncbi.nlm.nih.gov/1347406/ [2] https://pubmed.ncbi.nlm.nih.gov/1374894/ [3] https://pubmed.ncbi.nlm.nih.gov/8602893/ [4] https://pubmed.ncbi.nlm.nih.gov/9336328/ [5] https://pubmed.ncbi.nlm.nih.gov/7895765/ [6] https://pubmed.ncbi.nlm.nih.gov/1825226/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-07-31)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT06969755	RECRUITING	Schizophenia Disorder	Northwell Health	2024-09-04	PHASE4
NCT05316883	RECRUITING	Schizophrenia; Psychosis	Jimmi Nielsen	2021-02-28	PHASE4
NCT07326124	NOT_YET_RECRUITING	Treatment Resistant Psychosis; Psychosis	University of Oxford	2026-06	PHASE3
NCT05208190	RECRUITING	Schizophrenia; Schizoaffective Disorder	New York State Psychiatric Institute	2022-03-17	PHASE4
NCT05603104	RECRUITING	Schizophrenia and Related Disorders; Major Depressive Disorder; Bipolar Depression	Dr. Inge Winter	2025-04-27	PHASE3
NCT05958875	RECRUITING	Schizophrenia and Related Disorders; Early Treatment-Resistance	Dr. Inge Winter	2024-08-01	PHASE4

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Clozapine 5-HT Receptor antagonist

Chemical Structure

Molecular Weight: 326.82