NS309 is a nonselective activator of small- and intermediate-conductance Ca2+-activated K+ (SK/KCa2 and IK/KCa3.1) channels (EC50s range from 0.12-1.2 µM for SK channels and 10-90 nM for IK channels). It can also activate voltage-gated Kv11.1 channels (hERG, IC50 = 1 µM), but does not, however, affect large conductance (BK/KCa1.1) channels. NS309 can modulate neuronal firing patterns by enhancing SK-mediated hyperpolarizing effects. It is 730-fold (SK channels) and 7,400-fold (IK channels) more potent than 1-EBIO and often used in conjunction with CyPPA to distinguish between SK1 and SK3 subtypes.
Molecular Weight:
231.04
Purity:
0.9755
CAS Number:
[18711-16-5]
Formula:
C8H4Cl2N2O2
Target:
Potassium Channel|||EGFR
T4612
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