Dexamethasone 9, 11-epoxide is an impurity in the commercial preparation of dexamethasone. Dexamethasone is an anti-inflammatory compound approved by the FDA for several conditions, including arthritis, skin diseases, croup, brain swelling, and others.

Dexamethasone palmitate (a derivative of Dexamethasone), anti-inflammatory, antirheumatic, glucocorticoid receptor agonist, is reported as an ingredient of Limethason in Japan and Lipotalon in Germany. Limethason (Dexamethasone palmitate) inhibits the function of leukocytes and tissue macrophages. It restricts the migration of leukocytes in the area of inflammation. Limethason (Dexamethasone palmitate) decreases capillary permeability caused by histamine release. It inhibits the activity of fibroblasts and collagen formation. Limethason inhibits the activity of phospholipase A2, which leads to suppression of the synthesis of prostaglandins and leukotrienes. Limethason (Dexamethasone palmitate) is indicated for rheumatoid arthritis.