Desonide Impurity 2

Chemical Name: Pregna-1,4,9(11)-triene-3,20-dione, 16α,17,21-trihydroxy-, cyclic 16,17-acetal with acetone (7CI,8CI); (16α)-21-Hydroxy-16,17-[(1-methylethylidene)bis(oxy)]pregna-1,4,9(11)-triene-3,20-dione; 21-Hydroxy-16α,17α-(isopropylidenedioxy)pregna-1,4,9(11)triene-3,20-dione; Pregna-​1,​4,​9(11)​-​triene-​3,​20-​dione, 21-​hydroxy-​16,​17-​[(1-​methylethylidene)​bis(oxy)​]​-​, (16α)​-;

Synonym: ((S)-1-ethoxy-1-oxo-4-phenylbutan-2-yl)-L-alanyl-L-proline compound with maleic acid (1:1)

Smile: O=C1C=C[C@@]2(C)C(CCC3C2=CC[C@@]4(C)C3C[C@H]5[C@]4(OC(C)(C)O5)C(CO)=O)=C1