... . Assay:99% 3. Molecular weight: 635.14 4. CAS number: Ansamitocin P-3Molecular formula: C32H43ClN2O9 Assay:99%Molecular weight: 635.14CAS ... number: 66547-09-9Appearance: white powder.Pharmacological mechanisms:Ansamitocin P-3 belongs to the ansamycin antibiotics and has the ... anti-tumor, anti-tuberculosis, anti-bacterial and other physiological activity. Ansamitocin CAS 66547-09-9