medicine, a pharmaceutical suitable institution as well as the connection of the structure (7, 17 alpha, - alpha) - 17 - hydroxy - 7 - methyl - 19) - 17 - pregn - 5 (10) - ene - 20 - yne - 3 - one contains.

摘要

A pharmaceutical composition which contains a pharmaceutically suitable carrier and the compound having the structure (7 alpha ,17 alpha )-17-hydroxy-7-methyl-19-nor-17-pregn-5(10)-en-20-yn-3-one, characterized in that the said compound is crystalline pure and completely or virtually completely free from the other crystalline form.