Syk Inhibitor II dihydrochloride 

Syk Inhibitor II dihydrochloride is a potent, high selective and ATP-competitive Syk inhibitor with an IC₅₀ of 41 nM. Syk Inhibitor II dihydrochloride inhibits 5-HT release from RBL-cells with an IC₅₀ of 460 nM. Syk Inhibitor II dihydrochloride shows less potent against other kinases and has anti-allergic effect^[1].

Syk Inhibitor II (compound 9a) dihydrochloride shows less potent against PKCε, PKCβ2, ZAP-70, Btk, and Itk with IC₅₀ values of 5.1 µM, 11 µM, 11.2 µM, 15.5 µM, and 22.6 µM, respectively^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Syk Inhibitor II (Compound 9a; 10-100 mg/kg) dihydrochloride is subcutaneously administered to mice 30 min before antigen challenge. Syk Inhibitor II inhibits the anaphylaxis reaction dose-dependently with an ID₅₀ value of 13.2 mg/kg^[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

413.23

C₁₄H₁₇Cl₂F₃N₆O

227449-73-2

O=C(C1=CN=C(NCCN)N=C1NC2=CC=CC(C(F)(F)F)=C2)N.[H]Cl.[H]Cl

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Hiroyuki Hisamichi, et al. Synthetic studies on novel Syk inhibitors. Part 1: Synthesis and structure-activity relationships of pyrimidine-5-carboxamide derivatives. Bioorg Med Chem. 2005 Aug 15;13(16):4936-51.  [Content Brief]