A 5-fluorotryptamine derivative that inhibits myeloperoxidase/MPO activity (IC50 = 18nM) via direct affinity interaction with enzyme active site heme pyrrole ring D, while exhibiting much reduced affinity toward serotonin reuptake transporter/SERT (Ki = 631nM). Kinetic studies reveal that the inhibitor acts as a good one-electron donor for the intermediate Compound I "Fe(IV)=O...Por•+", facilitating the formation of Compound II (Fe(IV)-OH...Por) and thereby preventing the reduction of Compound I directly to the resting state "Fe(IV)...Por" via the "halogenation cycle", while, on the other hand, behaves as a poor electron donor for Compound II, thereby preventing the completion of the "peroxidase cycle" by stalling the further reduction of Compound II to the resting state.
Alternate Names:4-(5-Fluoro-1H-indol-3-yl)butanamide, MPO Inhibitor II
Molecular Formula:C₁₂H₁₃FN₂O
Primary Target:Myeloperoxidase
Solubility:DMSO
Storage and Stability:Store at 4°C under inert atmosphere. For maximum recovery of product, centrifuge the original vial prior to removing the cap.
