Dipeptidase inhibitor (LTDase, leukotriene D4 hydrolase, dehydropeptidase I) that displays a Ki value of 0.11 μM. Inhibits metabolism of LTD4 to LTE4 and the hydrolysis of β-lactam antibiotics. Nephroprotective; reduces toxic accumulation of cyclosporin A in kidney proximal tubule epithelial cells. Purity 99%. MW (observed): 380.43