Sodium Orthovanadate is a general inhibitor for protein phosphotyrosyl phosphatases. BioAssay Systems' vanadate reagent is activated for maximum inhibition. Example of uses: preserve protein phosphorylation state in cells and lysates, and use as a standard phosphatase inhibitor in phosphatase assays. Key Features: Ready-to-use phosphatase inhibitor. Fully activated for maximum inhibition. Kit size: 1 mL 100 mM.