Estrone sulfate, the 3-sulfate conjugate of estrone. Estriol glucuronide, the 16α-glucuronide conjugate of estriol. An<unk>  is a conjugate of an endogenous estrogen. They occur naturally in the body as metabolites of estrogens and can be reconverted back into estrogens. They serve as a circulating reservoir for estrogen, particularly in the case of orally administered pharmaceutical estradiol.<unk> s include sulfate and/or glucuronide conjugates of estradiol, estrone, and estriol: * Sulfated: * Estrone 3-sulfate (E1S) * Estradiol 3-sulfate (E2S, E2-3S) and estradiol 17β-sulfate (E2-17S) * Estriol 3-sulfate (E3S) * Estradiol 3,17β-disulfate (E2DS) * Glucuronidated: * Estrone 3-glucuronide (E1-G) * Estradiol 3-glucuronide (E2-3G) and estradiol 17β-glucuronide (E2-17G) * Estriol 3-glucuronide (E3-3G), estriol 16α-glucuronide (E3-16G) * Mixed: * Estradiol 3-glucuronide 17β-sulfate (E2-3G-17βS) * Estradiol 3-sulfate 17β-glucuronide (E2-3S-17βG) * Estriol 3-sulfate 16α-glucuronide (E3-3S-16G)<unk> s are conjugated at the C3, C16α, and/or C17β positions, where hydroxyl groups are available.<unk> s have been used as pharmaceutical estrogens, as in estrone sulfate as estropipate (piperazine estrone sulfate) and in conjugated estrogens (Premarin) and conjugated estriol (Progynon, Emmenin).
Estrogen conjugate
Xenoestrogen
Phytoestrogen
Tissue-selective estrogen complex
Antiprogestogen
Phytoprogestogen
Conjugated estrogens
Nonsteroidal estrogen