Estropipate

Estropipate, also known as piperazine estrone sulfate and sold under the brand names Harmogen, Improvera, Ogen, Ortho-Est, and Sulestrex among others, is an estrogen medication which is used mainly in menopausal hormone therapy in the treatment of menopausal symptoms. It is a salt of estrone sulfate and piperazine, and is transformed into estrone and estradiol in the body. It is taken by mouth.

"Ogen" redirects here. For the character in the Japanese anime, see Ogen (Basilisk). For the melon cultivar, see Galia melon.
Estropipate
Clinical data
Trade namesHarmogen, Improvera, Ogen, Ortho-Est, Sulestrex, others
Other namesPiperazine estrone sulfate; Estrone sulfate piperazine salt; Pipestrone
AHFS/Drugs.comMonograph
Routes of
administration		By mouth
Drug classEstrogen; Estrogen ester
ATC code
  • None
Legal status
Legal status
Identifiers
  • [(8R,9S,13S,14S)-13-Methyl-17-oxo-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-yl] hydrogen sulfate; piperazine
CAS Number
PubChem CID
DrugBank
ChemSpider
UNII
KEGG
ChEBI
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.027.906
Chemical and physical data
FormulaC22H32N2O5S
Molar mass436.57 g·mol−1
3D model (JSmol)
SMILES
  • O=S(=O)(O)Oc1cc4c(cc1)[C@@H]3[C@H]([C@@H]2CCC(=O)[C@@]2(C)CC3)CC4.N1CCNCC1
  • InChI=1S/C18H22O5S.C4H10N2/c1-18-9-8-14-13-5-3-12(23-24(20,21)22)10-11(13)2-4-15(14)16(18)6-7-17(18)19;1-2-6-4-3-5-1/h3,5,10,14-16H,2,4,6-9H2,1H3,(H,20,21,22);5-6H,1-4H2/t14-,15-,16+,18+;/m1./s1 Y
  • Key:HZEQBCVBILBTEP-ZFINNJDLSA-N Y
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