Also available in 1 mL, 1 mg, 10 mg, 25 mg, 50 mg, 100 mg, 500 mg and bulk. Please contact Fisher for quotes. Tie2 kinase inhibitor 1 (Tie2 kinase inhibitor), an optimized compound of SB-203580, is selective to Tie2 with IC50 of 0.25 uM, which is 200-fold more effective than p38. Purity 99.81%