Antibiotic. Potent, selective and competitive cell permeable rasfarnesyltransferase inhibitor (IC50= 30nM). Does not affect geranylgeranyltransferase (IC50=180uM). Inhibition is competitive with respect to farnesyl pyrophosphate and non-competitive with respect to Ras. Neutral sphingomyelinase inhibitor. Blocks insulin-induced MAP kinase activation in rat cardiac myocytes (19uM).Source:Streptomyces parvulusFormula:C31H38N2O7Solubility:Soluble in DMSO or methanol; insoluble in H2O.Molecular Weight:~550.6Storage and Stability:Lyophilized powder may be stored at -20°C. Stable for 12 months after receipt at -20°C. Reconstitute with sterile buffer or ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Reconstituted product is stable for 6 months at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.