PF-543 Citrate_product_DataBase

Bioactivity	PF-543 Citrate (Sphingosine Kinase 1 Inhibitor II Citrate) is a potent, selective, reversible and sphingosine-competitive SPHK1 inhibitor with an IC50 of 2 nM and a Ki of 3.6 nM. PF-543 Citrate is >100-fold selectivity for SPHK1 over SPHK2. PF-543 Citrate is an effective potent inhibitor of sphingosine 1-phosphate (S1P) formation in whole blood with an IC50 of 26.7 nM. PF-543 Citrate induces apoptosis, necrosis, and autophagy[1][2][3].
Invitro	PF-543 (10-1000 nM; 24 hours; PASM cells) treatment abolishes SK1 expression at nM concentrations[2].PF-543 (0.1-10 μM; 24 hours; PASM cells) treatment induces caspase-3/7 activity[2].PF-543 inhibits C17-S1P formation in 1483 cells with an IC50 of 1.0 nM[1].SphK1 inhibition by PF-543 causes a dose-dependent depletion of the intracellular level of S1P with EC50 concentration of 8.4 nM and a concomitant elevation of the intracellular level of sphingosine in 1483 cells. The level of endogenous S1P in 1483 cells after a 1 h treatment with 200 nM PF-543 is decreased 10-fold, producing a proportional increase in the level of sphingosine[1]. Western Blot Analysis[2] Cell Line:
Name	PF-543 Citrate
CAS	1415562-83-2
Formula	C33H39NO11S
Molar Mass	657.73
Transport	Room temperature in continental US; may vary elsewhere.
Storage	4°C, sealed storage, away from moisture *In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

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