英文别名Carfilzomib Impurity 18; 2-Methyl-2-propanyl {(2S)-4-methyl-1-[(2S)-2-methyl-2-oxiranyl]-1-oxo-2-pentanyl}carbamate; Carbamic acid, N-[(1S)-3-methyl-1-[[(2S)-2-methyloxiranyl]carbonyl]butyl]-, 1,1-dimethylethyl ester; CarbaMic acid, N-[(1S)-3-Methyl-1-[[(2S)-2-Methyl-2-oxiranyl]carbonyl]butyl]-, 1,1-diMethylethyl ester; N-[(1S)-3-Methyl-1-[[(2S)-2-Methyl-2-oxiranyl]carbonyl]butyl]-, 1,1-diMethylethyl este; N-[(1S)-3-Methyl-1-[[(2S)-2-Methyl-2-oxiranyl]carbonyl]butyl]-, 1,1-diMethylethyl ester; [(1S)-3-Methyl-1-[[(2S)-2-methyloxiranyl]carbonyl]butyl]-carbamic Acid 1,1-Dimethylethyl Ester; Kyprolis Impurity 32; Carfilzomib intermediate isomer 
