Desogestrel Impurity 1

Chemical Name: (5R,8S,9R,10S,13S,14S,17R)-13-ethyl-17-ethynyl-11-methylene-2,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-ol

Synonym: N,N,N′,N′-tetramethylethane-1,2-diamine (1,2-bis(dimethylamino)ethane, N,N,N′,N′-tetramethylethylenediamine),