Composition of matter and process

摘要

Novel antibiotic U-64,815 producible in a fermentation under controlled conditions using a biologically pure culture of the microorganism Streptomyces microspinus, NRRL 12524. This antibiotic is active against various Gram-positive bacteria, for example, Staphylococcus aureus. It is also active against Haemophilus influenzae. Thus, antibiotic U-64,815 can be used in various environments to eradicate or control such bacteria.