{"product_id":"ns-309-bhb21300233","title":"NS-309","description":"\u003ch3\u003eProduct details\u003c\/h3\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eChemical name:\u003c\/strong\u003e 6,7-Dichloro-1H-indole-2,3-dione 3-oxime.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCAS number:\u003c\/strong\u003e 18711-16-5\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular formula:\u003c\/strong\u003e C8H4Cl2N2O2.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity:\u003c\/strong\u003e \u0026gt;99% (HPLC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConcentration:\u003c\/strong\u003e 0.1 - 10 µM.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eForm:\u003c\/strong\u003e Lyophilized powder.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolubility:\u003c\/strong\u003e DMSO. Centrifuge all product preparations before use (10000 x g 5 min).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconstitution:\u003c\/strong\u003e DMSO. Centrifuge all product preparations before use (10000 x g 5 min).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping:\u003c\/strong\u003e Shipped at room temperature. Product as supplied can be stored intact at room temperature for several weeks. For longer periods, it should be stored at -20°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget:\u003c\/strong\u003e KCa2 and KCa3.1 K+ channels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSource:\u003c\/strong\u003e Synthetic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eActivity:\u003c\/strong\u003e NS-309 is a positive modulator of small- and intermediate- conductance Ca2+-activated K+ (KCa2 and KCa3.1) channels, with EC50 values of 30 and 10 nM, respectively1. NS-309 also blocks L-type Ca2+ channels with IC50 value of 10 μM2.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eScientific background\u003c\/h3\u003e \u003cp\u003eCa2+-activated potassium channels (KCa) are a group of 6\/7-TM proteins that selectively transport K+ ions across biological membranes. They are broadly classified into three subtypes: SK, IK and BK channels (small, intermediate and big conductance, respectively). Three SK channel subtypes exist (SK1-3, KCa2.1-3)1 and are widely distributed in the central nervous system (CNS)1-2 as well as in the periphery. They constitute a molecular family of voltage-independent channels with the peripherally expressed intermediate conductance Ca2+-activated K+ channel (IK, KCa3.1)3, but differ in their distribution; SK channels are predominantly expressed in excitable cells, whereas IK channels mostly are found in non-excitable cells3-4.NS-309 is a selective and potent activator of KCa3.1 and KCa2 channels, whereas it is devoid of effect on BK (KCa1.1) type channels5-6. Whole cell currents, obtained by voltage ramps applied to HEK293 cells, reveal that human KCa2 channels are two to four times less sensitive to NS-309 than human KCa3.1; NS-309 increases the KCa2 currents with an EC50 value of 30 nM, whereas an EC50 value of 10 nM is inferred for the KCa3.1 currents5.NS-309 possesses a therapeutic potency for cystic fibrosis and chronic obstructive pulmonary disease by improving epithelial Cl- secretion via KCa3.1 channel activation7 and for moderating neuronal hyperexcitability by enhancing apamin-sensitive after-hyperpolarizing current (IAHP, mediated by KCa2 channels)5-6.NS-309 shows substantial block of L-type Ca2+ channel. It concentration-dependently inhibits the ICa in smooth muscle cells isolated from mouse urinary bladder with an IC50 value of 10.6 mM8. However, the specificity of NS-309 for the KCa3.1 channel over VDCC is much higher.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eLead time:\u003c\/strong\u003e 1-2 Business Days\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eCountry of origin:\u003c\/strong\u003e Israel\/IL\u003c\/p\u003e \u003ch3\u003eApplications key\u003c\/h3\u003e \u003cp\u003eApplication key: FC- Flow cytometry, IFC- Indirect flow cytometry, IHC- Immunohistochemistry,LCI- Live cell imaging, Calcium imaging assay,Cell survival assay, Electrophysiology, Neurite outgrowth assay.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eBioassay tested:\u003c\/strong\u003e Yes\u003c\/p\u003e","brand":"Alomone Labs","offers":[{"title":"10 mg \/ 1","offer_id":53249710719341,"sku":"N-180-10MG-1","price":75.0,"currency_code":"USD","in_stock":true},{"title":"25 mg \/ 1","offer_id":53311566184813,"sku":"N-180-25MG-1","price":129.0,"currency_code":"USD","in_stock":true},{"title":"5 mg \/ 1","offer_id":53311566217581,"sku":"N-180-5MG-1","price":55.0,"currency_code":"USD","in_stock":true},{"title":"50 mg \/ 1","offer_id":53311566250349,"sku":"N-180-50MG-1","price":223.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7424\/7277\/files\/N-180_gr.gif?v=1778544437","url":"https:\/\/www.ebiohippo.com\/products\/ns-309-bhb21300233","provider":"BioHippo","version":"1.0","type":"link"}