1443752-76-8

OP-1074, a pure anti-estrogen drug, is a selective ER degrader (PA-SERD) with specific anti-estrogenic activity against ERα and ERβ, inhibiting 17β-estradiol (E2)-stimulated transcription with IC50 values of 1.6 and 3.2 nM, respectively.

ERα; ERβ

[1] Fanning SW, et al. Specific stereochemistry of OP-1074 disrupts estrogen receptor alpha helix 12 and confers pure antiestrogenic activity.Nat Commun. 2018 Jun 18;9(1):2368. DOI:10.1038/s41467-018-04413-3