PTZ-343 is a potent enhancer of Luminol (HY-15922). PTZ-343 greatly increases the light output of the peroxidase-catalyzed luminol chemiluminescent oxidation reaction (>80%)[2].In Vitro: PTZ-343 behaves as electron transfer mediator, it reacts with HRP-II to release HRP and a enhance (PTZ-343) radical. The enhancer (PTZ-343) radical quickly oxidizes luminol anions to induce light emission.