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Ketanserin 5-HT Receptor antagonist

Name: Ketanserin
Brand: Selleck Chemicals
SKU: S2232
Availability: InStock
Rating: 5 (5 reviews)

Cat.No.S2232

Ketanserin (R41468, Ketanserinum) is a specific 5-HT2A serotonin receptor antagonist with K_i of 2.5 nM for rat and human 5-HT2A, used as an antihypertensive drug.

Chemical Structure

Molecular Weight: 395.43

Jump to Mechanism of Action Solubility Chemical Information, Storage & Stability Specificity

Quality Control

Batch: Purity: 99.84%

99.84

Related Targets	Adrenergic Receptor AChR COX Calcium Channel Histamine Receptor Dopamine Receptor GABA Receptor TRP Channel Cholinesterase (ChE) GluR MAO Beta Amyloid iGluR NMDAR P2 Receptor Trk receptor Serotonin Transporter Notch Norepinephrine Cannabinoid Receptor P-gp CaMK Opioid Receptor BACE Sigma Receptor FAAH Neurokinin Receptor OX Receptor CGRP Receptor CCK receptor
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Chemical Information, Storage & Stability

Molecular Weight	395.43	Formula	C₂₂H₂₂FN₃O₃	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	74050-98-9	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent
Synonyms	R41468, Ketanserinum			Smiles	C1CN(CCC1C(=O)C2=CC=C(C=C2)F)CCN3C(=O)C4=CC=CC=C4NC3=O

Solubility

In vitro
Batch:

DMSO : 3 mg/mL (7.58 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : 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.
Clear solution	4%DMSO 1 40%PEG300 2 4%Tween80 3 52%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.000mg/ml (2.53mM)	Taking the 1 mL working solution as an example, add 40 μL 25 mg/ml clarified DMSO stock solution to 400 μL PEG300, mix evenly to clarify it; add 40 μL Tween80 to the above system, mix evenly to clarify it; then continue to add 520 μL ddH2O to adjust the volume to 1 mL. 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.	0.300mg/ml (0.76mM)	Taking the 1 mL working solution as an example, add 50 μL of 6 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.
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.

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.

Mechanism of Action

Targets/IC₅₀/Ki	5-HT2A ^[7] 2.5 nM(Ki) 5-HT2C (Rat) ^[7] 50 nM(Ki) 5-HT2C (Human) ^[7] 100 nM(Ki)
In vitro	Ketanserin causes a dose-dependent inhibition on the contractile responses to 5-hydroxytryptamine of isolated rat caudal artery, canine basilar, carotid, coronary and gastrosplenic arteries, canine gastrosplenic veins and canine saphenous veins. This compound inhibits the contractions of rat caudal arteries and canine saphenous veins caused by postjunctional alpha adrenergic activation. It depresses and in certain experiments reverses the vasoconstrictor response to 5-hydroxytryptamine in the perfused guinea-pig stomach. ^[1] This chemical is found to attenuate the excitatory responses produced by norepinephrine, an alpha 1-adrenoceptor-mediated response, in the lateral geniculate nucleus. It potentiates rather than attenuates, the inhibitory effect of 5-HT in the lateral geniculate nucleus. ^[2] This compound significantly prolongs action potential duration (APD) at 50% repolarization by 218% and APD at 90% repolarization by 256% with no significant effect on other action potential parameters in rat ventricular myocytes. It results in a concentration- and time-dependent inhibition of charge area of Ito evaluated by integration with an EC50 of 8.3 μM. This chemical also blocks Ito and sustained current (ISus) in a dose-dependent manner with an EC50 of 11.2 μM and has no significant effect on both the inward rectifier potassium current and the L-type calcium current. ^[3]
In vivo	Ketanserin produces dose-dependent antinociception in the hot-plate and acetic acid-induced writhing tests with ED50 values (95% confidence limit) of 1.51 and 0.62 mg/kg, respectively, but this compound is without any significant effect on the tail-flick test. ^[4]
References	[1] https://pubmed.ncbi.nlm.nih.gov/6113280/ [2] https://pubmed.ncbi.nlm.nih.gov/3158835/ [3] https://pubmed.ncbi.nlm.nih.gov/7923617/ [4] https://pubmed.ncbi.nlm.nih.gov/1676334/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2024-05-22)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT03289949	Recruiting	Basic Science	Gitte Moos Knudsen\|Rigshospitalet Denmark	March 3 2017	Phase 1
NCT01329887	Completed	Severe Sepsis\|Septic Shock	Medical Centre Leeuwarden	March 2011	Phase 3

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