6-Hydroxyrubiadin is primarily used in research settings for its biological activity, particularly in studies related to anti-inflammatory and antioxidant effects. It has shown potential in inhibiting certain enzymes involved in inflammatory pathways, making it a compound of interest in the development of therapeutic agents for chronic inflammatory diseases. Additionally, its ability to scavenge free radicals supports its evaluation in oxidative stress-related conditions. It is also utilized as a reference standard in phytochemical analysis due to its natural occurrence in some medicinal plants. Its structural features make it useful in structure-activity relationship (SAR) studies for designing new bioactive molecules.