Ac-DEVD-AMC is the Caspase-3 substrate. Sequence: N-Acetyl-Asp-Glu-Val-Asp-7-amido-4-Methylcoumarin. In Vitro: Ac-DEVD-AMC is the caspase-3 substrate and could be used to monitor intracellular caspase-3 activity^[1].The AMC moiety is highest at 2 h (area =5.6±1.8), the AMC peak area for Ac-DEVD-AMC incubated without lung specimen (substrate alone) for 6 h is relatively small^[2].