It is Streptomyces str. oganonensis Y-G 19Z and Oganomycin A is produced when p-hydroxycinnamate sodium salt is added to the fermentation medium. Under the action of D-amino acid oxidase, A generates glutaryl derivative, GA; A and GA were converted to B and GB by acid hydrolysis to remove sulfate esters. The effect of B on d-amino acid oxidase was also changed to GB. A and B were more stable than A and B of cemycin, and had stronger effect against gram-positive and gram-negative bacteria than gram-positive bacteria. The antibacterial activity of A and B was higher than that of GA and GB.