Azelastine HCl (Allergodil)

Alias:
Cat No.:V1209 Purity: ≥98%
Azelastine HCl(Allergodil; Astelin; Optivar; Rhinolast; Azeptin),the hydrochloride salt of azelastine, is a potent, 2nd-generation, and selective histamine receptor antagonist used for the treatment of rhinitis.
Azelastine HCl (Allergodil) Chemical Structure CAS No.: 79307-93-0
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
100mg
250mg
500mg
1g
2g
5g
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Other Forms of Azelastine HCl (Allergodil):

  • Azelastine (Allergodil)
Official Supplier of:
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description

Azelastine HCl (Allergodil; Astelin; Optivar; Rhinolast; Azeptin), the hydrochloride salt of azelastine, is a potent, 2nd-generation, and selective histamine receptor antagonist used for the treatment of rhinitis. In addition to its antiallergic and anti-inflammatory properties unrelated to H1-receptor binding, azelastine HCl exhibits antiallergic effects linked to histamine antagonism. Azelastine has been demonstrated to prevent mast cell production of TNF alpha, IL-6, and IL-8 by preventing NF-κB activation.

Biological Activity I Assay Protocols (From Reference)
Targets
H1 Receptor
ln Vitro

In vitro activity: Azelastine hydrochloride has the ability to strongly suppress HNEpC proliferation, which makes it useful in the fight against airway remodeling[5].

ln Vivo
Azelastine hydrochloride (4 mg/kg; p.o.; daily; for 8 weeks) (4 mg/kg; p.o.; daily; for 8 weeks) significantly lowers blood glucose, HbA1c, serum alkaline phosphatase (ALP), osteocalcin, and apolipoprotein B in diabetic hyperlipidemic rats model[2].
Azelastine hydrochloride (4 mg/kg; p.o.; daily; for 8 weeks) improves the lipid profile (LDL-c decrease and HDL-c increase) in diabetic hyperlipidemic rats model[2].
Azelastine hydrochloride (4 mg/kg; p.o.; daily; for 8 weeks) reduces calcium deposition and aortic calcification in diabetic hyperlipidemic rats model[2].
Cell Assay
Cell Line: Human nasal epithelial cells (HNEpC)
Concentration: 100 μM, 400 μM
Incubation Time: 21 days
Result: Inhibited HNEpC growth.
Animal Protocol
Male albino Wistar rats (150-170 g), diabetic hyperlipidemic rats model
4 mg/kg
Oral administration, daily, for 8 weeks
References

[1]. Review of the pharmacology, clinical efficacy, and safety of azelastine hydrochloridel. Expert Rev Clin Immunol. 2005 Jul;1(2):191-201.

[2]. Azelastine a potent antihistamine agent, as hypolipidemic and modulator for aortic calcification in diabetic hyperlipidemic rats model. Arch Physiol Biochem. 2020 Jul 2;1-8.

[3]. Azelastine potentiates antiasthmatic dexamethasone effect on a murine asthma model. Pharmacol Res Perspect. 2019 Dec; 7(6): e00531.

[4]. Identification of SARS-CoV-2 entry inhibitors among already approved drugs. Acta Pharmacol Sin. 2020 Oct 28: 1–7.

[5]. Effect of budesonide and azelastine on histamine signaling regulation in human nasal epithelial cells. Eur Arch Otorhinolaryngol. 2017 Feb;274(2):845-853.

These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C22H25CL2N3O
Molecular Weight
418.36
Exact Mass
417.14
Elemental Analysis
C, 63.16; H, 6.02; Cl, 16.95; N, 10.04; O, 3.82
CAS #
79307-93-0
Related CAS #
Azelastine; 58581-89-8; Azelastine-13C,d3 hydrochloride
Appearance
Solid powder
SMILES
CN1CCCC(CC1)N2C(=O)C3=CC=CC=C3C(=N2)CC4=CC=C(C=C4)Cl.Cl
InChi Key
YEJAJYAHJQIWNU-UHFFFAOYSA-N
InChi Code
InChI=1S/C22H24ClN3O.ClH/c1-25-13-4-5-18(12-14-25)26-22(27)20-7-3-2-6-19(20)21(24-26)15-16-8-10-17(23)11-9-16;/h2-3,6-11,18H,4-5,12-15H2,1H3;1H
Chemical Name
4-[(4-chlorophenyl)methyl]-2-(1-methylazepan-4-yl)phthalazin-1-one;hydrochloride
Synonyms

Allergodil; Azelastine HCl; Astelin; Optivar; Rhinolast; Azeptin

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

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: 50~84 mg/mL (119.5~200.8 mM)
Water: ~35 mg/mL (~83.7 mM)
Ethanol: ~84 mg/mL (~200.8 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.5 mg/mL (5.98 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.5 mg/mL (5.98 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.3903 mL 11.9514 mL 23.9029 mL
5 mM 0.4781 mL 2.3903 mL 4.7806 mL
10 mM 0.2390 mL 1.1951 mL 2.3903 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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An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

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
Instructions to calculate molar mass (molecular weight) of a chemical compound:
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
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Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

  • Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
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  • The answer appears in the Volume (to add to vial) box
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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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
NCT06008860 Recruiting Drug: Experimental: Primary Cohort
Other: Placebo Comparator:
Primary Cohort - Placebo
COVID-19 University of Chicago July 1, 2023 Phase 4
NCT06126952 Recruiting Drug: Treatment A: Azelastine
hydrochloride 0.15% nasal spray
Drug: Treatment B: Placebo
(Azelastine 0.15% vehicle) nasal spray
Seasonal Allergic
Rhinitis
MEDA Pharma GmbH & Co. KG October 30, 2023 Phase 2
NCT05626621 Recruiting Drug: Mometasone (1 mg) and Azelastine
(1 mg) Nasal Irrigation
Drug: Mometasone Nasal
Irrigation (1 mg capsule)
Chronic Rhinitis NorthShore University
HealthSystem
November 23, 2022 Phase 4
NCT04264637 Completed Drug: Azelastine hydrochloride
(BAYR9258)
Drug: Placebo
Allergic Rhinitis Bayer February 3, 2020 Phase 3
NCT00612118 Recruiting Drug: azelastine hydrochloride
Drug: GSK256066
Rhinitis, Allergic, Seasonal
Allergic Rhinitis
GlaxoSmithKline February 2008 Phase 2
Biological Data
  • Azelastine enhances dexamethasone‐induced GR activity in vitro. Pharmacol Res Perspect . 2019 Oct 29;7(6):e00531.
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