S4400 SIGMA Staurosporine from Streptomyces sp. ≥95% (HPLC), film Synonym: Antibiotic AM-2282 CAS Number 62996-74-1 Empirical Formula (Hill Notation) C28H26N4O3 Molecular Weight 466.53 assay ≥95% (HPLC) form film solubility DMSO: soluble H2O: insoluble ethanol: soluble methanol: soluble storage temp. 2-8°C