4-Aminobenzohydrazide (S9874-GRP)

4-Aminobenzohydrazide (4-Aminobenzhydrazide, 4-aminobenzoic acid hydrazide, 4-ABAH, Myeloperoxidase Inhibitor I, NSC 640) is an inhibitor of MPO (Myeloperoxidase) enzyme that enhances iNOS induction in MPO-positive cells, but not in MPO-KO cells.