The peptide Ac-Ala-Glu-Val-Asp-al, or Ac-AEVD-CHO, is an inhibitor of Group III caspases. It acts upon caspases-6, 8, 9, and 10, with particular effectiveness on caspase-6 and caspase-8. The use of Ac-AEVD-CHO in several apotosis studies has been reported.