(17alpha)-9,17-Dihydroxypregn-4-en-20-yn-3-one 116256-39-4 17-Ethynyl-9,17-dihydroxyandrost-4-en-3-one Etdiohandrostene-3-one Pregn-4-en-20-yn-3-one, 9,17-dihydroxy-, (17alpha)-