The molecule is a bianthracene homodimer composed of two nataloe-emodin moieties linked by an aryl-aryl bond. It is a secondary metabolite isolated from the fungal tomato pathogen Cladosporium fulvum. It has a role as a biological pigment and a fungal metabolite. It is a trihydroxyanthraquinone, a polyphenol and a member of bianthracenes. It derives from a nataloe-emodin. It is a conjugate acid of a cladofulvin(2-).
1,7,8-trihydroxy-3-methyl-2-(4,5,6-trihydroxy-2-methyl-9,10-dioxoanthracen-1-yl)anthracene-9,10-dione