Description
Betamethasone dipropionate cream USP, 0.05% 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, USP is a white to almost white crystalline powder. It is practically insoluble in water, sparingly soluble in alcohol and freely soluble in acetone, methylene chloride and 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:
Molecular Formula : C28H37FO7
Molecular Weight : 504.60
Each gram contains 0.64 mg betamethasone dipropionate, USP (equivalent to 0.5 mg betamethasone) in a white to off-white cream of cetomacrogol 1000, cetostearyl alcohol, mineral oil, purified water, sodium phosphate monobasic, white petrolatum and chlorocresol is present as preservative.