7-cis-aconityl-Docetaxel

Chemical Name: (2aR,4S,4aS,6R,9S,11S,12S,12bS)-12b-acetoxy-9-(((2R,3S)-3-((tert-butoxycarbonyl)amino)-2-hydroxy-3-phenylpropanoyl)oxy)-4-(2-(2,5-dioxo-2,5-dihydrofuran-3-yl)acetoxy)-6,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxet-12-yl benzoate

Synonym: Desogestrel EP Impurity B ; (17α)-11-Methylene-19-norpregn-4-en-20-yn-17-ol