Description General description A cell-permeable, allosteric, trisubstituted dihydropyrazolyl compound that acts as a potent, selective, reversible and non-competitive inhibitor of Cdc42 GTPases (IC50 = 0.2, 2.6 and 5.4 µM against nucleotide depleted Cdc42-wt, Cdc42-wt and Cdc42 activated mutant, respectively) with excellent selectivity over Rho family GTPases (IC50 > 100 µM for Ras-wt, Ras activated mutant, Rab7-wt, Rab2a-wt, Rac1-wt and Rac1 activated mutant). Shown to efficiently block Cdc42 association with GTPγS and PAK-PBD, and decrease GTP-Cdc42 (> 95%) and GTP-Rac1 (≥40%) contents in EGF-stimulated 3T3 cells, and inhibit Bradykinin (Cat. No. 05-23-0500)-induced filopodia formation in 3T3 cells at 10 µM. Packaging 25 mg in Glass bottle Packaged under inert gas Warning Toxicity: Standard Handling (A) Reconstitution Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C. Other Notes Hong, L., et al. 2012. J. Biol. Chem.in press. Probe Reports from the NIH Molecular Libraries Program [Internet]. Bethesda (MD): National Center for Biotechnology Information (US); 2010-.2010 Feb 27. (http://www.ncbi.nlm.nih.gov/books/NBK51965/)