Estrogen receptor modulator 6

Estrogen receptor modulator 6 (compound 3a) is a highly specific and potent agonist of the estrogen receptor (ER) β with a remarkable affinity (K i = 0.44 nM). This compound exhibits an impressive 19-fold selectivity for ERβ over ERα, as evidenced by its affinity (K i = 8.4 nM).

1. Richardson TI, et al. Benzopyrans as selective estrogen receptor beta agonists (SERBAs). Part 5: Combined A- and C-ring structure-activity relationship studies. Bioorg Med Chem Lett. 2007;17(20):5563-5566.