CH223191

CH223191 is a potent and specific antagonist of the aryl hydrocarbon receptor (AhR) that blocks activation by 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD; IC₅₀ = 0.03 µM; Kim et al.). It prevents the induction of cytochrome P450 1A1 by TCDD in HepG2 cells and in livers of mice (Kim et al.).

MAINTENANCE AND SELF-RENEWAL

• Induces expansion of human CD34+ hematopoietic stem and progenitor cells in culture (Boitano et al.).