organic molecular entity N-benzyloxycarbonyl-L-leucyl-L-leucyl-L-leucinal A tripeptide that is L-leucyl-L-leucyl-L-leucine in which the C-terminal carboxy group has been reduced to the corresponding aldehyde and the N-terminal amino group is protected as its benzyloxycarbonyl derivative. C([C@H](CC(C)C)NC([C@H](CC(C)C)NC([C@H](CC(C)C)NC(=O)OCC1=CC=CC=C1)=O)=O)(=O)[H] C26H41N3O5 MG-132 PubChem:462382 Wikipedia:MG132