Nicorandil Potassium Channel activator

Cat.No.S1971

Nicorandil (SG-75) is a potassium channel activator, and stimulates guanylate cyclase to increase formation of cyclic GMP (cGMP).
Nicorandil Potassium Channel activator Chemical Structure

Chemical Structure

Molecular Weight: 211.17

Quality Control

Chemical Information, Storage & Stability

Molecular Weight 211.17 Formula

C8H9N3O4

Storage (From the date of receipt)
CAS No. 65141-46-0 Download SDF Storage of Stock Solutions

Synonyms SG-75 Smiles C1=CC(=CN=C1)C(=O)NCCO[N+](=O)[O-]

Solubility

In vitro
Batch:

DMSO : 42 mg/mL (198.89 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Ethanol : 34 mg/mL

Water : 21 mg/mL

Molarity Calculator

Mass Concentration Volume Molecular Weight

In vivo
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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.

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Mechanism of Action

Targets/IC50/Ki
Potassium channel [1]
In vitro
Nicorandil (100 mM) increases Flavoprotein oxidation but not membrane current; a 10-fold higher concentration recruits both mitoK(ATP) and surfaceK(ATP) channels. This compound bluntes the rate of cell death in a pelleting model of ischemia; this cardioprotective effect is prevented by the mitoK(ATP) channel blocker 5-hydroxydecanoate but is unaffected by the surfaceK(ATP) channel blocker HMR1098. [1] This chemical suppresses TUNEL positivity, cytochrome c translocation, caspase-3 activation and dissipation of mitochondrialinner membrane potential (Delta(Psi)(m)). It prevents Delta(Psi)(m) depolarization in a concentration-dependent manner (EC(50) approximately 40 mM, with saturation by 100 mM), as shown by fluorescence-activated cell sorter analysis of cells stained with a fluorescent Delta(Psi)(m)-indicator, tetramethylrhodamine ethyl ester (TMRE). [2] This compound activates a weakly inwardly-rectifying, glibenclamide-sensitive 80 pS K+ channel in both the transfected cells. It preferentially activates the K(ATP) channels containing SUR2B in HEK293T cells. [3] This chemical significantly suppresses the number of cells with TUNEL-positive nuclei and the increase in caspase-3 activity induced by 20 mM H2O2. It prevents the loss of DeltaPsim induced by H2O2 in a concentration-dependent manner. [4]
In vivo
Nicorandil (2.5 mg/kg daily, p.o.) combined with Amlodipine (5.0 mg/kg daily, p.o.) for 3 days significantly prevents these alterations and restored the enzyme activities to near normal in rats. [5]
References
  • [4] https://pubmed.ncbi.nlm.nih.gov/14568328/
  • [5] https://pubmed.ncbi.nlm.nih.gov/12619898/

Clinical Trial Information

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

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT06249581 Active not recruiting
Chronic Stable Angina
Auxilius Pharma sp.z.o.o.
November 27 2023 Early Phase 1
NCT02809456 Unknown status
Radiation Pneumonitis
Taipei Medical University WanFang Hospital
July 2016 Phase 2
NCT01396395 Completed
Stable Angina|Coronary Disease
Merck KGaA Darmstadt Germany|Merck Serono Co. Ltd. China
September 2011 Phase 4

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