Carfilzomib Impurity 16 (SSSSS)

Chemical Name: (S)-N-((S)-1-(((2S,4S)-1,2-dihydroxy-2,6-dimethyl-3-oxoheptan-4-yl)amino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide ; (2S)-N-((2S)-1-(((4S)-1,2-Dihydroxy-2,6-dimethyl-3-oxoheptan-4-yl)amino)-1-oxo-3-phenylpropan-2-yl)-4-methyl-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide

Synonym: Carfilzomib (2S,4S)-Diol