CHROMANOL 293B
Synonym(s):trans-N-[6-Cyano-3,4-dihydro-3-hydroxy-2,2-dimethyl-2H-1-benzopyran-4-yl]-N-methyl-ethanesulfonamide
- CAS NO.：163163-23-3
- Empirical Formula: C15H20N2O4S
- Molecular Weight: 324.4
- MDL number: MFCD06799499
- SAFETY DATA SHEET (SDS)
- Update Date: 2025-08-20 16:56:24
What is CHROMANOL 293B?
Description
Chromanol 293B is a blocker of slowly activating delayed-rectifier K+ current (IKs) with an IC50 value of 6.89 μM in Xenopus oocytes expressing rat IKs channels. It is selective, having no activity at rat Kv1.1 or Kir2.1 channels at a concentration of 30 μM. Chromanol 293B increases the rate and extent of IKs in guinea pig ventricular cells in a dose-dependent manner. It also inhibits cystic fibrosis transmembrane conductance regulator (CTFR) Cl- currents (ICTFR) with an IC50 value of 19 μM in Xenopus oocytes expressing human CTFR.
The Uses of CHROMANOL 293B
Chromanol 293B has been used in the inhibition of calcium and cyclic adenosine monophosphate (cAMP)-activated potassium channels in human epithelial cell lines. Chromanol 293B has been used in patch-clamp electrophysiology studies in cardiomyocytes.
Definition
ChEBI: Chromanol 293B is a 1-benzopyran.
What are the applications of Application
Chromanol 293B is a blocker of the slow delayed rectifier K+ current
General Description
Chromanol 293B enantiomer is a potent inhibitor of potassium channel protein (KvLQT1). In human atrial myocytes, chromanol 293B inhibits repolarization potassium currents. Chromanol 293B improves glucose-stimulated insulin secretion (GSIS) in pancreas by modulating potassium voltage-gated channel (KCNQ1).
Biological Activity
Blocker of the slow delayed rectifier K + current (I Ks ) (IC 50 = 1-10 μ M). Also blocks the CFTR chloride current (I CFTR ) (IC 50 = 19 μ M).
Biochem/physiol Actions
Blocker of the slow delayed rectifier K+ current via KCNQ1 channels
Storage
Room temperature
Properties of CHROMANOL 293B
| Boiling point: | 474.1±55.0 °C(Predicted) |
| Density | 1.33±0.1 g/cm3(Predicted) |
| storage temp. | -20°C |
| solubility | DMSO: 18 mg/mL |
| form | solid |
| pka | 12.96±0.60(Predicted) |
| color | white |
Safety information for CHROMANOL 293B
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H302:Acute toxicity,oral H312:Acute toxicity,dermal H332:Acute toxicity,inhalation |
| Precautionary Statement Codes |
P280:Wear protective gloves/protective clothing/eye protection/face protection. |
Computed Descriptors for CHROMANOL 293B
New Products
Indole Methyl Resin tert-butyl 9-methoxy-3-azaspiro[5.5]undecane-3-carboxylate Boc-His(Boc)-OH 2-CTC Resin 4-Chloro-7-tosy1-7Hpyrrolo[2,3-d]pyrimidine 5,7-Dibromo-1H-indole 2,5-dichloro-N-hydroxy-4,6-dimethylpyridine-3-carboximidamide 2,2-Dimethoxy-7-azaspiro[3.5]nonane hydrochloride 4-chloromethyl-5-methyl-1,3-dioxol-2-one (DMDO-Cl) R-2-BENZYLOXY PROPIONIC ACID 1,1’-CARBONYLDIIMIDAZOLE 1,1’-CARBONYLDI (1,2-4 TRIAZOLE) N-METHYL INDAZOLE-3-CARBOXYLIC ACID 4-((2-hydroxyethyl)thio)benzoic acid 1-(TERT-BUTOXYCARBONYL)-2-PYRROLIDINONE Methyl 6-methylnicotinate 3-Pyridineacrylic acid tert-Butyl carbazate TETRAHYDRO-2H-PYRAN-3-OL 2-((4-morpholinophenylamino) (methylthio) methylene) malononitrile 3-(4-morpholinophenylamino)-5-amino-1H-pyrazole-4-carbonitrile 2,4-dihydroxybenzaldehyde 1,3-Diethyl-1,3-Diphenylurea Methyl 2-methylquinoline-6-carboxylateRelated products of tetrahydrofuran
![(-)-[3R,4S]-CHROMANOL 293B,Chromanol 293B [3R,4S]-(-)-](https://img.chemicalbook.in/CAS/GIF/163163-24-4.gif)
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