Medchemexpress, HY-111767 10mg BAY-545 CAS:1699717-32-2 BAY-545 is a potent and selective A2B adenosine receptor antagonist, with an IC50 of 59 nM. BAY-545 also exhibits IC50s of 66, 400, 280 nM for human, mouse, rat A2B adenosine receptor in cells, respectively, and a Ki of 97 nM for human A2B adenosine receptor, with more selectivity over A1, A2A, and A3 adenosine receptor. Purity:>98% Medchemexpress has over 10000 novel life-science reagents, reference compounds, APIs and natural compounds for laboratory and scientific use. Other quantity can also be offered.