Pepstatina A, 5 mg

Isolated from streptomoycin and other actinomycetes.

Strong, highly selective inhibition. Inhibits pepsin, renin, cathepsin D, chymosin, protease B and also retroviral proteases. No inhibitive effect on thiolproteases, neutral proteases and serine proteases.
Hardly toxic.

Working concentration: 0.5-1 µM.
It may be necessary to add 10-50 % acetic acid to completely dissolve pepstatin A.