3-[3-(4-Methoxyphenyl)-1-oxo-2-propen-1-yl]-4-phenyl-2(1H)-quinolinone

IC50: 28 μM (Ceramidase)

Ceranib-2 (10 nM-10 µM; 72 hours; SKOV3 cells) treatment inhibits cell proliferation and/or survival with an IC ₅₀ value of 0.73 μM.
Ceranib-2 (0.75-1.5 µM; 48 hours; SKOV3 cells) treatment causes accumulation of cells in the sub-G1 (apoptosis), G2 and S (0.75 μM only) phases of the cell cycle, concomitant with reductions in the number of cells in G1 phase.
Ceranib-2 produces a dose-dependent decrease in ceramidase activity, with 50% inhibition at 28 μM, induces the accumulation of multiple ceramide species, and decreases levels of sphingosine and S1P.

Ceranib-2 (20-50 mg/kg; intraperitoneal injection; daily for 5 days per week; for 3 weeks; female Balb/c mice) treatment delays tumor growth in a syngeneic tumor model without hematologic suppression or overt signs of toxicity.
Intraperitoneal administration of 50 mg/kg Ceranib-2 results in progressive increases in its circulating levels, reaching a peak plasma concentration of approximately 40 μM at the 2 hr time point. Ceranib-2 appears to be cleared with a half-life of less than 2 hr.