Flunarizine 2HCl

Alias: Flunarizine dihydrochloride; Flunarizine 2HCl
Cat No.:V1447 Purity: ≥98%
Flunarizine 2HCl (formerly R-14950;KW3149; R14950;KW 3149; trade name Sibelium), the dihydrochloride salt form of Flunarizine,is a selective calcium entry/channel blocker with calmodulin binding properties and anti-histamine H1 activity.
Flunarizine 2HCl Chemical Structure CAS No.: 22348-32-9
Product category: DNA(RNA) Synthesis
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
Other Sizes

Other Forms of Flunarizine 2HCl:

  • Flunarizine hydrochloride
Official Supplier of:
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Alternate Text
Top Publications Citing lnvivochem Products
Purity & Quality Control Documentation

Purity: ≥98%

Product Description

Flunarizine 2HCl (formerly R-14950; KW3149; R14950; KW 3149; trade name Sibelium), the dihydrochloride salt form of Flunarizine, is a selective calcium entry/channel blocker with calmodulin binding properties and anti-histamine H1 activity. It blocks alcium channel with a Ki of 68 nM. Flunarizine is authorized for use as an adjuvant in the treatment of epilepsy, as well as in the prophylaxis of migraine, occlusive peripheral vascular disease, and vertigo of both central and peripheral origin.

Biological Activity I Assay Protocols (From Reference)
Targets
T-type calcium channel; D2 Receptor
ln Vitro
In cultured cortical neurons, flunarizine dihydrochloride has an IC50 value of 1.77 μM for calcium current (ICa) and 0.94 μM for sodium current (INa) expansion [2]. At concentrations of 3–10 μM, flunarizine dihydrochloride (10 and 30 μM; 24 Flunarizine hydrochloride (1–30 μM) significantly damages chromaffin cells [4]. Chromaffin cells are significantly cytotoxically affected by cell viability, which is assessed in [4] hours [4].
ln Vivo
Acute lung damage (ALI) caused by lipopolysaccharide (LPS) in mice's necks is prevented by flunarizine dihydrochloride (intraperitoneal injection; 30 mg/kg; once) [5].
Cell Assay
Cell Viability Assay[4]
Cell Types: Chromaffin
Tested Concentrations: 10 and 30 μM
Incubation Duration: 24 hrs (hours)
Experimental Results: demonstrated a trend of increased cell death at 10 μM concentration and close to 100% cell loss at 30 μM concentration.
Animal Protocol
Animal/Disease Models: Male balb/c (Bagg ALBino) mouse (6-8 weeks old)) lipopolysaccharide-induced acute lung injury [5]
Doses: 30 mg/kg
Route of Administration: intraperitoneal (ip) injection; 30 mg/kg;
Experimental Results:Inhibition of LPS induction of cell influx, protein leakage, and inflammatory cytokine release. Suppress lung inflammation.
References
[1]. Hong-Seob So, et al. Protective effect of T-type calcium channel blocker flunarizine on cisplatin-induced death of auditory cells. Hear Res. 2005 Jun;204(1-2):127-39.
[2]. Qing Ye, et al. Flunarizine blocks voltage-gated Na(+) and Ca(2+) currents in cultured rat cortical neurons: A possible locus of action in the prevention of migraine. Neurosci Lett. 2011 Jan 10;487(3):394-9.
[3]. Celia M Santi, et al. Differential inhibition of T-type calcium channels by neuroleptics. J Neurosci. 2002 Jan 15;22(2):396-403.
[4]. Novalbos J, et al. Effects of dotarizine and flunarizine on chromaffin cell viability and cytosolic Ca2+. Eur J Pharmacol. 1999 Feb 5;366(2-3):309-17.
[5]. Wan L, et al. Mibefradil and Flunarizine, Two T-Type Calcium Channel Inhibitors, Protect Mice against Lipopolysaccharide-Induced Acute Lung Injury. Mediators Inflamm. 2020 Nov 10;2020:3691701.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C26H26F2N2.2HCL
Molecular Weight
477.42
Exact Mass
476.16
Elemental Analysis
C, 65.41; H, 5.91; Cl, 14.85; F, 7.96; N, 5.87
CAS #
22348-32-9
Related CAS #
30484-77-6
Appearance
Solid powder
SMILES
C1C[C@@H](NC1)C(C2=CC=CC=C2)(C3=CC=CC=C3)O
InChi Key
OGCGXUGBDJGFFY-MRXNPFEDSA-N
InChi Code
InChI=1S/C17H19NO/c19-17(16-12-7-13-18-16,14-8-3-1-4-9-14)15-10-5-2-6-11-15/h1-6,8-11,16,18-19H,7,12-13H2/t16-/m1/s1
Chemical Name
diphenyl-[(2R)-pyrrolidin-2-yl]methano
Synonyms
Flunarizine dihydrochloride; Flunarizine 2HCl
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: 5~50 mg/mL (10.5~104.7 mM)
Water: <1 mg/mL
Ethanol: ~3 mg/mL (~6.3 mM)
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
View More

Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*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.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
View More

Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.0946 mL 10.4730 mL 20.9459 mL
5 mM 0.4189 mL 2.0946 mL 4.1892 mL
10 mM 0.2095 mL 1.0473 mL 2.0946 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

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

  • Calculate the Mass of a compound required to prepare a solution of known volume and concentration
  • Calculate the Volume of solution required to dissolve a compound of known mass to a desired concentration
  • Calculate the Concentration of a solution resulting from a known mass of compound in a specific volume
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?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • 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:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
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:
  • To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.
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)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
/

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
  • Click the “Calculate” button
  • 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.)
+
+
+

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.

Biological Data
  • Differential blockade of T-type Ca channels by the diphenyldiperazine flunarizine. Mean I–V relationships of T-type currents in the absence (filled circles) or presence (open circles) of flunarizine (1 μm), were obtained from normalized currents (mean ± SE from 3–6 cells) through α1G(A), α1H (B), and α1I (C). J Neurosci . 2002 Jan 15;22(2):396-403.
  • Preventive effects of flunarizine on LPS-induced ALI. Flunarizine (30 mg/kg) was treated 30 min before LPS exposure, and mice were sacrificed 6 h after LPS exposure. Mediators Inflamm . 2020 Nov 10:2020:3691701.
  • Therapeutic effects of flunarizine on LPS-induced lung injury. Mediators Inflamm . 2020 Nov 10:2020:3691701.
Contact Us Back to top