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Bupivacaine HCl Sodium Channel inhibitor

Cat.No.S2454

Bupivacaine HCl binds to the intracellular portion of voltage-gated sodium channels and blocks sodium influx into nerve cells, used for treating cardiac arrhythmias.
Bupivacaine HCl  Sodium Channel inhibitor Chemical Structure

Chemical Structure

Molecular Weight: 324.89

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Quality Control

Batch: Purity: 99.94%
99.94

Solubility

In vitro
Batch:

DMSO : 65 mg/mL (200.06 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : 65 mg/mL

Ethanol : 65 mg/mL

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In vivo
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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.
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Chemical Information, Storage & Stability

Molecular Weight 324.89 Formula

C18H28N2O.HCl

Storage (From the date of receipt)
CAS No. 18010-40-7 Download SDF Storage of Stock Solutions

Synonyms N/A Smiles CCCCN1CCCCC1C(=O)NC2=C(C=CC=C2C)C.Cl

Mechanism of Action

Targets/IC50/Ki
Sodium channel
In vitro
Bupivacaine solution is cytotoxic to bovine articular chondrocytes and articular cartilage in vitro after only 15 to 30 minutes exposure. Bupivacaine acts in isolated mitochondria, as uncouplers between oxygen consumption and phosphorylation of adenosine diphosphate. Bupivacaine causes a concentration-dependent mitochondrial depolarization and pyridine nucleotide oxidation in isolated mitochondria, which are matched by an increased oxygen consumption at bupivacaine concentrations of 1.5 mm or less at pH 7.4, whereas respiration is inhibited at higher concentrations. Bupivacaine causes the opening of the permeability transition pore (PTP), a cyclosporin A-sensitive inner membrane channel that plays a key role in many forms of cell death. Bupivacaine causes mitochondrial depolarization and pyridine nucleotides oxidation that are matched by increased concentrations of cytosolic free Ca(2+), release of cytochrome c, and eventually, hypercontracture in intact flexor digitorum brevis fibers. Bupivacaine inhibits GIRK channels within seconds of application, regardless of whether channels are activated through the muscarinic receptor or directly via coexpressed G protein G(beta)gamma subunits. Bupivacaine also inhibits alcohol-induced GIRK currents in the absence of functional pertussis toxin-sensitive G proteins. Bupivacaine HCl also potently inhibits cAMP production with an IC50 of 2.3 μM.
In vivo
Bupivacaine does not only induce Ca2+ release from the sarcoplasmic reticulum (SR) in rats, but also inhibits Ca2+ uptake by the SR, which is mainly regulated by SR Ca2+ adenosine triphosphatase activity.
References
  • [4] https://pubmed.ncbi.nlm.nih.gov/11353868/
  • [5] https://pubmed.ncbi.nlm.nih.gov/12218539/
  • [6] https://pubmed.ncbi.nlm.nih.gov/8393632/

Clinical Trial Information

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

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT05038956 Not yet recruiting
Video-assisted Thoracic Surgery (VATS)
University of Utah
May 1 2024 --
NCT06252662 Not yet recruiting
Breast Cancer
United States Naval Medical Center Portsmouth
April 2024 Phase 4
NCT06350981 Not yet recruiting
Back Pain|Surgery-Complications|Narcotic Use|Physical Stress|Post Operative Pain
Foundation for Orthopaedic Research and Education|Pacira Pharmaceuticals Inc
April 1 2024 Phase 2|Phase 3
NCT04003506 Not yet recruiting
Pain Postoperative
The University of Hong Kong
March 1 2024 Phase 4
NCT06293404 Not yet recruiting
Hip Fractures|Spinal Anesthesia
Ankara City Hospital Bilkent
March 1 2024 Not Applicable

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