Z-L-LEU-CHN2

(S)-3-Z-AMINO-1-DIAZO-5-METHYL-2-HEXANONE

N-ALPHA-BENZYLOXYCARBONYL-L-LEUCINYL-DIAZOMETHANE

N-ALPHA-BENZYLOXYCARBONYL-L-LEUCINYL-DIAZOMETHANE, (S)-3-Z-AMINO-1-DIAZO-5-METHYL-2-HEXANONE