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Cambridge MedChem Consulting

Cathepsin C inhibitor chemical probe

As part of the Boehringer Ingelheim's efforts to foster innovation, they are share selected molecules with the scientific community all for free. The opnme portal gives access to a range of novel ligands. The latest addition is BI-9740

BI-9740 is a very potent and highly selective inhibitor of the enzymatic activity of Cathepsin C. It blocks human CatC in vitro with an IC50 of 1.8 nM and shows > 1500x selectivity versus the related proteases Cathepsin B, F, H, K, L and S. BI-9740 displays no activity against 34 unrelated proteases from different classes up to a concentration of 10 µM.


Chemical probes are absolutely essential for target validation and it is great to see so many high quality tools being made available.