Desogestrel Impurity 4

Chemical Name: (3S,8S,9S,10R,13S,14S,17R)-17-ethynyl-13-methyl-11-methylene-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,17-diol

Synonym: 2,2′-oxybis(N,N-dimethylethanamine) (bis[2-(dimethylamino)ethyl] ether, N,N,N′,N′-tetramethyl(oxydiethylene)diamine)