An anthraquinone with diverse biological activities; prevents IL-1β-induced increases in NF-κB phosphorylation in chondrocytes at 25-200 µM; reduces cartilage degradation in a mouse model of DMM-induced osteoarthritis at 100 mg/kg; reduces blood glucose levels, as well as serum MDA, NO, triglyceride, and cholesterol levels, and increases serum SOD, GSH, and CAT activity at 30 and 90 mg/kg in a mouse model of STZ-induced diabetes