β-Estradiol is an estrogen and the primary female sex hormone and steroid, acting as a regulator of the estrous and menstrual female reproductive cycles. Directs the development of the female organs in embryogenesis and during puberty. It is an estrogen receptor agonist (Ki=0.12 and 0.13 nM for ERα and ERβ, respectively). Provided as 10 mg of dry powder. These highly purified, pre-validated control ligands have been used to qualify our InCELL Hunter, PathHunter and cAMP Hunter cell lines as well as our Assay Ready Kits. Ligands are conveniently supplied with a recommended reconstitution buffer. For detailed information and product-specific datasheet, visit www.discoverx.com/ligands.