NS 1619

Pricing Availability Delivery Time Qty
Cat.No. 3804 - NS 1619 | C15H8F6N2O2 | CAS No. 153587-01-0
Description: Activator of BKCa (KCa1.1) channels
Chemical Name: 1,3-Dihydro-1-[2-hydroxy-5-(trifluoromethyl)phenyl]-5-(trifluoromethyl)-2H-benzimidazol-2-one
Purity: ≥98% (HPLC)

Biological Activity

Large-conductance Ca2+-activated potassium (BKCa, KCa1.1) channel activator. Induces a concentration-dependent decrease in mitochondrial membrane potential (EC50 = 3.6 μM).

Technical Data

M. Wt 362.23
Formula C15H8F6N2O2
Storage Store at +4°C
Purity ≥98% (HPLC)
CAS Number 153587-01-0
PubChem ID 4552
Smiles O=C2NC1=CC(C(F)(F)F)=CC=C1N2C3=CC(C(F)(F)F)=CC=C3O

The technical data provided above is for guidance only. For batch specific data refer to the Certificate of Analysis.

All Tocris products are intended for laboratory research use only.

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
DMSO 36.22 100
ethanol 36.22 100

Preparing Stock Solutions

The following data is based on the product molecular weight 362.23. Batch specific molecular weights may vary from batch to batch due to solvent of hydration, which will affect the solvent volumes required to prepare stock solutions.

Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 2.76 mL 13.8 mL 27.61 mL
5 mM 0.55 mL 2.76 mL 5.52 mL
10 mM 0.28 mL 1.38 mL 2.76 mL
50 mM 0.06 mL 0.28 mL 0.55 mL

Molarity Calculator

Calculate the mass, volume, or concentration required for a solution.

*When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and SDS / CoA (available online).

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Dilution Calculator

Calculate the dilution required to prepare a stock solution.

Product Datasheets

Certificate of Analysis / Product Datasheet
Select another batch:
Safety Datasheet


References are publications that support the biological activity of the product.

Olesen et al (1994) Selective activation of Ca(2+)-dependent K+ channels by novel benzimidazolone. Eur.J.Pharmacol. 251 53 PMID: 8137869

Debska et al (2003) Large-conductance K+ channel openers NS1619 and NS004 as inhibitors of mitochondrial function in glioma cells. Biochem.Pharmacol. 65 1827 PMID: 12781334

Han et al (2008) The potassium ion channel opener NS1619 inhibits proliferation and induces apoptosis in A2780 ovarian cancer cells. Biochem.Biophys.Res.Comm. 375 205

If you know of a relevant reference for NS 1619, please let us know.

View Related Products by Product Action

View all Calcium-Activated Potassium (KCa) Channel Activators

Keywords: NS 1619, NS 1619 supplier, NS1619, Ca2+-activated, potassium, K+, KCa, KCa1.1, channels, activators, openers, large, conductance, BK, maxi-K, Ca2+-Activated, Potassium, Channels, 3804, Tocris Bioscience

Citations for NS 1619

Citations are publications that use Tocris products.

Currently there are no citations for NS 1619. Do you know of a great paper that uses NS 1619 from Tocris? Please let us know.

Reviews for NS 1619

There are currently no reviews for this product. Be the first to review NS 1619 and earn rewards!

Have you used NS 1619?

Submit a review and receive an Amazon gift card.

$10US/$10CAN/€7/£6 gift card for a review without an image

$25US/$25CAN/€18/£15 gift card for a review with an image

*Offer only valid in the USA / Canada, UK and Europe

Submit a Review

Literature in this Area

Tocris offers the following scientific literature in this area to showcase our products. We invite you to request* or download your copy today!

*Please note that Tocris will only send literature to established scientific business / institute addresses.

New Product Guide

New Product Guide (Spring/Summer 2018)

Our new product guide highlights over 200 new products added to the Tocris Bioscience range during the second half of 2017.

  • 7-TM Receptors
  • Enzymes
  • Enzyme-Linked Receptors
  • Ion Channels
  • Nuclear Receptors
  • Transporters
  • Aptamers
  • Cell Metabolism
  • Epigenetics
  • Fluorescent Imaging
  • Signal Transduction
  • Stem Cells