#17α-estradiol
17α-Estradiol
Chemical compound
17α-Estradiol is a minor and weak endogenous steroidal estrogen that is related to 17β-estradiol. It is the C17 epimer of estradiol. It has approximately 100-fold lower estrogenic potency than 17β-estradiol. The compound shows preferential affinity for the ERα over the ERβ. Although 17α-estradiol is far weaker than 17β-estradiol as an agonist of the nuclear estrogen receptors, it has been found to bind to and activate the brain-expressed ER-X with a greater potency than that of 17β-estradiol, suggesting that it may be the predominant endogenous ligand for the receptor.
Wed 24th
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