1-[2-(4-octylphenyl)ethyl]piperidin-4-ol

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.