13-Ethyl-17-hydroxy-18,19-dinorpregna-4,9,11-trien-20-yn-3-one 3-oxime 18,19-Dinorpregna-4,9,11-trien-20-yn-3-one, 13-ethyl-17-hydroxy-, oxime, (17-alpha)- 82332-21-6 R 2323 oxime So 65