Inhibitor of human leukocyte elastase (IC50=1.3ug/ml), different other elastases and chymotrypsin (IC50=82ug/ml).Source:Streptomyces sp.Formula:C24H40O4Solubility:DMSO (~5mg/ml), methanol (~5mg/ml) or methylene chlorideMolecular Weight:~392.6Storage and Stability:May be stored at 4°C for short-term only. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.