Also available in 1 mL, 1 mg, 10 mg, 25 mg, 50 mg, 100 mg and bulk. Please contact Fisher for quotes. I3MT-3 (HMPSNE) (HMPSNE) is a potent, selective and cell membrane permeability inhibitor of 3-mercaptopyruvate sulfur transferase (3MST), which targets the persulfated cysteine residues located at the active site of 3MST. Purity 99.86%