Thiostrepton is a natural cyclic oligopeptide antibiotic, derived from several strains of strepromycetes, such as Streptomyces azureus, Streptomyces laurentii. Properties Synonyms: Alaninamide, Bryamycin, Thiactin CAS number: 1393-48-2 Merck index: 14: 9364 Molecular weight: 1664.89 Molecular Formula: C72H85N19O18S5 Melting point: decomposes at 246-256oC Solubility information: Soluble in chloroform, dichloromethane, dioxane, pyridine, glacial acetic acid, DMF. Practically insoluble in w… (More on Thiostrepton)