Herein we present a small chemical library of analogues based upon the chemical structure of 10-chloro-7H-benzo[de]benzo[4,5]imidazo[2,1-a]isoquinolin-7-one (3, 10-Cl BBQ), a compound previously identified as activating the AhR pathway and presenting with selective growth inhibition in cells of breast cancer origin (Baker et al., 2021a; Elson et al., 2023). This evidence concerns the gene AHR and breast cancer.