MMP-III Inhibitor 25MG. MMP-III Inhibitor, CAS Number: 161314-17-6, Molecular Formula: C13H20N2O5S, Molecular Weight: 316. 38, Purity: raised to 3 98% by TLC, Appearance: White solid, Storage: Conditions -20 deg C, Synonym: N-Isobutyl-N-(4-methoxyphenylsulfonyl)glycyl hydroxamic acid, Size: 25MG