(S)-4-methyl-N-((S)-1-(((S)-4-methyl-1-((R)-2-methyloxiran-2-yl)-1-oxopentan-2-yl)amino)-1-oxo-3-phenylpropan-2-yl)-2-((S)-2-(2-morpholinoacetamido)-4-phenylbutanamido)pentanamide; CAS No.: 1011-85-4 This chemical is characterized by its stability and specific reactivity. It is primarily used in the pharmaceutical industry for the synthesis of active pharmaceutical ingredients.