13649-84-8

(16b)-21-(Acetyloxy)-2'-methyl-5'H-Pregna-1,4-dieno[17,16-d]oxazole-3,11,20-trione, is an impurity of Deflazacort (D228975), a systemic corticosteroid, and a derivative of prednisolone. Used for rheumatoid arthritis and lupus.