(R)-ND-336 is a highly potent and selective MMP-9 inhibitor, displaying a K i value of 19 nM. It also exhibits inhibitory activity against MMP-2 (K i = 127 nM) and MMP-14 (K i =119 nM). With its significant potential, (R)-ND-336 is being investigated in the field of diabetic foot ulcers (DFUs) research [1].