17.alpha.-(2-Methallyl)-19-nortestosterone 17.alpha.-(2-Methylallyl)-19-nortestosterone 2529-46-6 Estr-4-en-3-one, 17-hydroxy-17-(2-methyl-2-propenyl)-, (17.beta.)- Estr-4-en-3-one, 17.beta.-hydroxy-17-(2-methylallyl)- NSC70594 SC 9022