Prednisolone 21-Acetate 17-Valerate is a derivative of Prednisolone (P703740), which is a synthetic corticosteroid, metabolically interconvertible with prednisone, and an impurity of Hydrocortisone (H714615). Prednisolone 21-Acetate 17-Valerate is used in multifunctional nanoemulsion platform for imaging guided therapy evaluated in experimental cancer.