AntibioticA 661-I (9CI) is a chemical compound registered under CAS number 56452-47-2, with the molecular formula C47H79NO16 and a molecular weight of about 914.14 g/mol. ChemIBD supplies AntibioticA 661-I (9CI) for laboratory research and bulk production; product code 1348198. Send an inquiry for purity, packaging, price and lead time.