SK1-IN-1 is a potent inhibitor of sphingosine kinase 1 (SPHK1)(IC50 of 58 nM).

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 (hE

ASK1-IN-1 is an inhibitor of apoptosis signal-regulating kinase 1 which is a key mediator in the apoptotic and inflammatory cellular stress response with an IC50 of 21 nM in biochemica assays.

RB-005 is a potent sphingosine kinase isoform 1 (SK1) inhibitor, which may serve as therapeutic agent for proliferative diseases, including hypertension. RB-005, (IC(50) = 3.6 μM), which also induced proteasomal degradation of SK1 in human pulmonary arterial smooth muscle cells.