Estrone (Aquacrine) is an aromatized C18 steroid with a 3-hydroxyl group and a 17-ketone, a major mammalian estrogen. It is converted from ANDROSTENEDIONE directly, or from TESTOSTERONE via ESTRADIOL. In humans, it is produced primarily by the cyclic ovaries, PLACENTA, and the ADIPOSE TISSUE of men and postmenopausal women.

Oleoylestrone (MP-101) is present in plasma and adipose tissue, has potential antioxidant effects, induces loss of body fat in rats, and can be used for weight loss.

Premarin (Estrone 3-sulfate) is an an estrogen sulfate with neuroprotective actions during traumatic brain injury.

Estrone sulfate sodium (17β-Estrone 3-sulfate) is an endogenous steroid and an estrogen ester that is biologically inactive. It is converted by steroid sulfatase into estrone . Estrone sulfate sodium has been investigated as a ligand for targeting organic anion transporting polypeptides f

Estrone sulfate potassium is an estrogen ester and conjugate, a natural endogenous steroid.

4-hydroxyestrone-4-methyl ether (4-Methoxy Estrone) is the methylation of 4-OHE1, which is catalyzed by COMT.

Estropipate (Piperazine estrone sulfate) is a natural estrogenic substance composed of estrone sulfate and piperazine.

2-Methoxyestrone is a methoxylated catechol estrogen and metabolite of estrone (pKa: 10.81).

4-Hydroxyestrone, an endogenous estrogen metabolite, can strongly protect neuronal cells against oxidative damage.

Mulberrin (Kuwanon C) is an inhibitor of OATP2B1-mediated estrone-3-sulfate (E3S) uptake (IC50: 1.8 ±1.5 μM).

Estriol (Oestriol) is a hydroxylated metabolite of ESTRADIOL or ESTRONE that has a hydroxyl group at C3, 16-alpha, and 17-beta position. Estriol is a major urinary estrogen. During PREGNANCY, a large amount of estriol is produced by the PLACENTA.