13-ethyl-17alpha-hydroxy-18,19-dinorpregn-4-en-20-yn-3-one cyclobutanecarboxylate
CAS No. 86679-36-9
13-ethyl-17alpha-hydroxy-18,19-dinorpregn-4-en-20-yn-3-one cyclobutanecarboxylate;17α-[(Cyclobutylcarbonyl)oxy]-13-ethyl-18,19-dinorpregn-4-en-20-yn-3-one;Einecs 289-271-6