17-Hydroxy-21-[(methylsulfonyl)oxy]-pregna-1,4-diene-3,11,20-trione is an intermediate used in the synthesis of 17-Hydroxy-21-(phosphonooxy)pregna-1,4-diene-3,11,20-trione Disodium Salt (H949940), which is a derivative of Prednisolone Sodium (P703775), which is a synthetic corticosteroid; metabolically interconvertible with prednisone.