Cytochrome P450

Dibenzothiophene is a noncompetitive inhibitor of cytochrome P450 1A (CYP1A), effectively inhibiting CYP1A-mediated ethoxyresorufin O-deethylation (EROD) activity with a Km value of 0.592 μM. This compound interacts with the aryl hydrocarbon receptor (AHR) pathway and has been shown to enhance the embryotoxicity of β-naphthoflavone. Its acute toxicity in animal models underscores its relevance in research. Dibenzothiophene is primarily utilized in studies investigating the mechanisms of developmental toxicity in various organisms.

(±) Homoeriodictyol is a potent inhibitor of aromatase (CYP19), an enzyme critical in estrogen biosynthesis. This compound is primarily utilized in breast cancer research to investigate estrogen-mediated pathways and their role in tumor growth. Its inhibitory activity makes it a valuable tool for studying therapeutic strategies targeting aromatase in hormone-related cancers.