Description
Betamethasone dipropionate ointment contains betamethasone dipropionate USP, a synthetic adrenocorticosteroid, for dermatologic use. Betamethasone, an analog of prednisolone, has a high degree of glucocorticoid activity and a slight degree of mineralocorticoid activity.
Betamethasone dipropionate is a white to cream white powder. It is practically insoluble in water, sparingly soluble in ethanol (96%) and freely soluble in acetone, in methylene chloride and in chloroform.
Chemically, it is 9-fluoro-11β,17,21-trihydroxy-16β-methylpregna-1,4-diene-3,20-dione 17,21- dipropionate. The structural formula is:
Each gram of the 0.05% ointment contains 0.64 mg betamethasone dipropionate, USP (equivalent to 0.5 mg betamethasone) in an ointment base of mineral oil and white petrolatum.