(16alpha)-16-Ethyl-21-hydroxy-19-norpregn-4-ene-3,20-dione 16alpha-Ethyl-21-hydroxy-19-nor-4-pregnene-3,20-dione 19-Norpregn-4-ene-3,20-dione, 16-Ethyl-21-hydroxy-, (16alpha)- 24320-06-7 O-2058 Org 2058 Org-2058