PPO-IN-2 is an inhibitor of protoporphyrinogen IX oxidase with an Ki of 16 nM[1].
References
[1] Bai-Feng Zheng, et.al. Discovery of a Subnanomolar Inhibitor of Protoporphyrinogen IX Oxidase via Fragment-Based Virtual Screening.Journal of Agricultural and Food Chemistry 2023 71 (23), 8746-8756.