Substrate for caspase-1, -4 and -5. Fluorogenic substrate for caspase-1 (Km=4µM), -4 (Km=31µM);and -5 (Km=15µM). This fluorogenic caspase-1 substrate with an optimal tetrapeptide sequence is cleaved 50-fold more efficiently than Ac-YVAD-AMC (ALX-260-024). Alternative name: Caspase 1 substrate (fluorogenic), Caspase 5 substrate (fluorogenic), Caspase 4 substrate (fluorogenic). Formula: C38H40N8O11. MW: 784.8. Purity: ≥98% (HPLC). Formulation: Lyophilized. Peptide content: 70-90%. Solubility: Soluble in DMSO (100mM, 75.5mg/ml). Dilute with distilled water or buffer. Long Term Storage: -20°C. Handling: Protect from light and moisture.