Catalog #: 27230
Size: 10 mg
MW: 475.6 Da
CAS Registry #: 133407-82-6
Formula: C26H41N3O5

(S)-MG132, also known as Z-Leu-Leu-Leu-CHO, is a potent, reversible and cell-permeable inhibitor of proteasomes that inhibits cell growth in B16 and IPC227F cells. It also inhibits NF-κB activation, sensitizing a variety of carcinoma cell lines to apoptosis.


≥98% by HPLC

Biological Activity:

(S)-MG132 inhibits cell growth in B16 and IPC227F cells with IC50 values of 42 nM and 77 nM, respectively.


Soluble in ethanol, DMSO and DMF, purged with an inert gas. Solubility in these solvents is approximately 25 mg/ml.

A crystalline solid.
Storage / Stability:

Store at or below –20°C. Solid form is stable at least 12 months from date of receipt, when stored as directed. Do not store aqueous solutions for more than one day.


1. Lee, D.H., et al., Trends Cell Biol. 1998;8:397-403
2. Elliot, P.J., et al., J. Mol. Med. 2003;81:235-245
3. Vivier, M., et al., J. Med. Chem. 2008;51(4):1043-1047

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