BS-181 is a highly selective inhibitor of CDK7, exhibiting potent activity with an IC50 value of 21 nM. It demonstrates remarkable specificity, showing over 40-fold greater selectivity for CDK7 compared to other cyclin-dependent kinases, including CDK1, CDK2, CDK4, CDK5, CDK6, and CDK9. This exceptional selectivity positions BS-181 as a valuable tool for studying CDK7-specific biological functions and exploring its therapeutic potential in diseases where CDK7 plays a critical role, such as cancer. Its precision in targeting CDK7 underscores its utility in both research and drug development efforts.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.