Estradiol valerate (β-estradiol 17-valerate; Estraval; Progynova; Valergen; Altadiol; Deladiol; Delestrogen), the 17β-valerate ester of estradiol, is a synthetic, steroidal estrogen and an estrogen ester commonly used in combination with other steroid hormones in hormone replacement therapies.

Liquiritigenin is a novel and potent flavonoid.

Ethynodiol diacetate (Luteonorm, Luto-Metrodiol, Metrodiol, Continuin, Femulen, norethindrol diacetate), the diacetate ester form of ethynodiol, is one of the first synthetic steroidal progestogens used as a contraceptive drug.

Estradiol (Oestradiol; Estrace; Dihydrofolliculin; β-Estradiol; 17β-estradiol, β-Estradiol; E2; 17β-Oestradiol), the 17-beta-isomer of estradiol, is an endogenous/naturally occuring estrogen steroid hormone and a primary female sex hormone that is involved in the regulation of the estrous and menstrual female reproductive cycles.

Equol [(-)-Equol, (3S)-Equol, (S)-Equol, AUS 131] is an isoflavandiol estrogen metabolized from daidzein, specifically, it is produced by intestinal bacteria in response to soy isoflavone intake in human.

Bazedoxifene (also known as TSE-424; WAY140424), a novel third generation selective estrogen receptor modulator (SERM) with IC50s of 26 and 99 nM for ERα and ERβ, respectively, has been developed to have favorable effects on bone and the lipid profile while minimizing stimulation of uterine or breast tissues.

Estrone (formerly known as E1, and oestrone) is an endogenous estrogenic hormone and a minor female sex hormone secreted by the ovary as well as adipose tissue.

Estradiol cypionate (Depoestradiol; β-Estradiol 17-cypionate) is the 17 β-cyclopentylpropinate ester of estradiol used in hormone therapy for menopausal symptoms and low estrogen levels in women.

Fulvestrant (ICI-182780; ZD-9238; ZM-182780; Faslodex) is a synthetic and potent estrogen receptor (ER) antagonist approved as a medication for the treatment of hormone receptor (HR)-positive breast cancer in postmenopausal women.

Quinestrol (W3566) is a novel steroid compound used in estrogen/hormone replacement therapy, and may also be used to treat breast cancer and prostate cancer.