17,21-dihydroxy-16β-methylpregna-1,4-diene-3,20-dione Dipropionate is a corticoid with the potential for ant-iinflammatory activity. Impurity of Beclomethasone (B131000), a glucocorticoid. Used in chronic asthma and allergic rhinitis. Antiallergic, antiasthmatic (inhalant). Anti-inflammatory (topical).