Medchemexpress, HY-100452 5mg TCS-OX2-29 CAS:372523-75-6 TCS-OX2-29 is a potent, high affinities and selective orexin-2 receptor (OX 2 R) antagonist with an IC 50 value of 40 nM and a pK I value of 7.5. TCS-OX2-29 displays ~250-fold selectivity for OX 2 over OX 1 [1] [2] . 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.