Hydroxyzine 2HCl

Alias: Hydroxyzine dihydrochloride; NSC 169188; U.C.B 4492; Hydroxyzine hydrochloride; NSC-169188; NSC169188; trade names: Arcanax; Neurolax; Orgatrax; Pamoate, Hydroxyzine; Vistaril
Cat No.:V1243 Purity: ≥98%
Hydroxyzine 2HCl (NSC-169188; NSC169188; Arcanax; Neurolax; Orgatrax; Pamoate, Hydroxyzine; Vistaril),the dihydrochloride salt of hydroxyzine, is a potent histamine H1-receptor antagonist and an antihistamine drug used in the treatment of itchiness, anxiety, and nausea.
Hydroxyzine 2HCl Chemical Structure CAS No.: 2192-20-3
Product category: Histamine Receptor
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
500mg
1g
2g
5g
10g
Other Sizes

Other Forms of Hydroxyzine 2HCl:

  • Hydroxyzine-d4 dihydrochloride (Vistaril-d4' (dihydrochloride); Atarax-dd4' (dihydrochloride))
  • Hydroxyzine pamoate
  • Hydroxyzine
  • Hydroxyzine-d8 dihydrochloride (hydroxyzine d8 hydrochloride (bis hydrochloride))
Official Supplier of:
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

Hydroxyzine 2HCl (NSC-169188; NSC169188; Arcanax; Neurolax; Orgatrax; Pamoate, Hydroxyzine; Vistaril), the dihydrochloride salt of hydroxyzine, is a potent histamine H1-receptor antagonist and an antihistamine drug used in the treatment of itchiness, anxiety, and nausea. It has an IC50 of 10 nM/19 nM and inhibits the binding of [3H]pyrilamine/[3H]desloratadine to the human histamine H1 receptor. Hydroxyzine does make you sleepy, in contrast to its primary metabolite cetirizine.

Biological Activity I Assay Protocols (From Reference)
Targets
Histamine H1 receptor ( IC50 = 10 nM-19 nM )
ln Vitro

In vitro activity: Hydroxyzine dihydrochloride, when applied to pretreated bladder slices for 60 minutes, reduces serotonin release induced by carbachol (10 μM) by 34% at 10 μM, 25% at 1 μM, and 17% at 0.1 μM[1].

ln Vivo
Hydroxyzine dihydrochloride (12.5 mg/kg, 25 mg/kg, and 50 mg/kg intraperitoneally) only significantly increases the effect of morphine on the vocalization after-discharge, which in rats is thought to be the affective component of pain. It has minimal direct analgesic activity. In the tail-flick test, hydroxyzine dihydrochloride (50 mg/kg i.p.) amplifies morphine, whereas hydroxyzine (12.5 mg/kg i.p.) reduces morphine antinociception in rats[3].
Animal Protocol
Dissolved in saline; 50 mg/kg; i.v. injection
Sprague-Dawley rats
References

[1]. Hydroxyzine inhibits neurogenic bladder mast cell activation. Int J Immunopharmacol, 1998. 20(10): p. 553-63.

[2]. A study of the influence of hydroxyzine and diazepam on morphine antinociceptoion in the rat. Pain, 1979. 7(2): p. 173-80.

[3]. Evaluation of anxiolytic effects of aripiprazole and hydroxyzine as a combination in mice. J Basic Clin Pharm. 2016 Sep;7(4):97-104.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C21H29CL3N2O2
Molecular Weight
447.83
Exact Mass
446.13
Elemental Analysis
C, 56.32; H, 6.53; Cl, 23.75; N, 6.26; O, 7.15
CAS #
2192-20-3
Related CAS #
Hydroxyzine-d4 dihydrochloride;1219805-91-0;Hydroxyzine pamoate;10246-75-0;Hydroxyzine;68-88-2;Hydroxyzine-d4 dihydrochloride;Hydroxyzine-d8 dihydrochloride;1808202-93-8
Appearance
Solid powder
SMILES
C1CN(CCN1CCOCCO)C(C2=CC=CC=C2)C3=CC=C(C=C3)Cl.Cl.Cl
InChi Key
ANOMHKZSQFYSBR-UHFFFAOYSA-N
InChi Code
InChI=1S/C21H27ClN2O2.2ClH/c22-20-8-6-19(7-9-20)21(18-4-2-1-3-5-18)24-12-10-23(11-13-24)14-16-26-17-15-25;;/h1-9,21,25H,10-17H2;2*1H
Chemical Name
2-[2-[4-[(4-chlorophenyl)-phenylmethyl]piperazin-1-yl]ethoxy]ethanol;dihydrochloride
Synonyms
Hydroxyzine dihydrochloride; NSC 169188; U.C.B 4492; Hydroxyzine hydrochloride; NSC-169188; NSC169188; trade names: Arcanax; Neurolax; Orgatrax; Pamoate, Hydroxyzine; Vistaril
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Note: Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture and light.
Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
DMSO: ~90 mg/mL (~201 mM)
Water: ~90 mg/mL (~201 mM)
Ethanol: <1 mg/mL
Solubility (In Vivo)
Solubility in Formulation 1: 100 mg/mL (223.30 mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with sonication.

Solubility in Formulation 2: Saline: 30 mg/mL

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.2330 mL 11.1650 mL 22.3299 mL
5 mM 0.4466 mL 2.2330 mL 4.4660 mL
10 mM 0.2233 mL 1.1165 mL 2.2330 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

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Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution 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 stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

Clinical Trial Information
NCT Number Recruitment interventions Conditions Sponsor/Collaborators Start Date Phases
NCT06080100 Not yet recruiting Drug: Xenon
Other: premedication
hydroxyzine 25 mg
Anesthesia
Anxiety
The S.N. Fyodorov Eye
Microsurgery State
Institution
November 1, 2023 Early Phase 1
NCT05680584 Recruiting Drug: Melatonin 3 MG
Drug: Hydroxyzine Pill
Effect of Drug
Anxiety
Minia University February 1, 2023 Phase 1
NCT05737511 Not yet recruiting Drug: Hydroxyzine
Drug: Escitalopram Oxalate
Panic Disorder Sultan Qaboos University December 30, 2023 Phase 4
NCT04188106 Completed Drug: Varenicline Pill
Drug: Hydroxyzine Pill
Stress
Nausea
Smoking Cessation
Rose Research Center, LLC June 17, 2019 Phase 4
NCT00661674 Completed Drug: Palonosetron
Drug: Hydroxyzine
Substance-Related Disorders Stanford University April 2008 Not Applicable
Biological Data
  • J Basic Clin Pharm . 2016 Sep;7(4):97-104.
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