<chemical> 21-hydroxypregn-4-ene-3,20-dione. Mineralocorticoid. Desoxycorticosterone acetate (doca) is used as replacement therapy in addison's disease. ... Chemical name: Pregn-4-ene-3,20-dione, 21-hydroxy- ... (12 Dec 1998) ... Found on http://www.encyclo.co.uk/local/20973