<jats:title>Abstract</jats:title> <jats:p> Two catecholate siderophores (chrysobactin and chryseomonin) were isolated from an iron-deficient culture medium of Chryseomonas luteola. Their structures were elucidated by chemical degradation studies and spectroscopic methods, especially 2D-NMR techniques, and confirmed by synthesis. Chryseomonin constitutes a novel type of catecholate siderophore.