Product Description: Thymolphthalexon (tetrasodium) is an organic compound commonly used as a reagent in biochemical assays. It belongs to the family of thioxanthone derivatives and has strong antioxidant properties. Thymolphthalexon has several applications in the study of free radical response, oxidative stress, and aging. In addition, it can be used as a photosensitizer in photodynamic therapy for the improvement of cancer and other diseases.