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Wikipedia - Equilin

Equilin
Systematic (IUPAC) name
3-Hydroxy-13-methyl-9,11,12,14,15,16-hexahydro-6H-cylcopenta(a)phenanthren-17-one
Identifiers
CAS number 474-86-2
ATC code  ?
PubChem CID 3247
DrugBank EXPT01355
Chemical data
Formula C18H20O2 
Mol. mass 268.355 g/mol
Therapeutic considerations
Pregnancy cat.  ?
Legal status

Equilin is an estrogen from horses with the chemical name 3-hydroxyestra-1,3,5,7-tetraen-17-one. Equilin is one of the estrogens present in the mixture of estrogens isolated from horse urine and marketed as Premarin. Premarin became the most commonly used form of estrogen for hormone replacement therapy in the United States of America. Estrone is the major estrogen in Premarin (about 50%) and equilin is present as about 25% of the total. Estrone is a major estrogen that is normally found in women. Equilin is not normally present in women, so there has been interest in the effects of equilin on the human body [1].

The estrogens in Premarin are present mainly as "conjugates", modified chemical froms in which the active estrogen is coupled to another chemical group such as sulfate. Estrone sulfate is usually the major form of estrogen in women. After being taken into a woman's body, the conjugated estrogens of Premarin are converted to the active unconjugated estrogens or excreted from the woman's body. Estrone can be converted to estradiol, which is thought to be the major active estrogen in women.

v • d • e
Estrogens and progestogens (G03C-D)
Progestogens/
progestins
(progesterone)
Agonist
Other/
ungrouped
Antiprogestogen/
SPRM
Estrogens
Agonist
#WHO-EM. ‡Withdrawn from market. CLINICAL TRIALS: †Phase III. §Never to phase III
Retrieved from "http://en.wikipedia.org/wiki/Equilin"

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Equilin".

 

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