Antibiotic. Cyclic adenosine 3',5'-monophosphate phosphodiesterase and topoisomerase I (Topo I) inhibitor. Antitumor compound.Source:Streptomyces sp.Formula:C11H10O5 Solubility:DMSO, acetone or DMFMolecular Weight:~222.2Storage and Stability:Lyophilized powder may be stored at -20°C. Stable for 12 months after receipt at -20°C. Reconstitute with sterile buffer or ddH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. Reconstituted product is stable for 6 months 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.