Active Ingredient History

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Enclomifene (INN), or enclomiphene (USAN), a nonsteroidal selective estrogen receptor modulator of the triphenylethylene group acts by antagonizing the estrogen receptor (ER) in the pituitary gland, which reduces negative feedback by estrogen on the hypothalamic-pituitary-gonadal axis, thereby increasing gonadotropin secretion and hence gonadal production of testosterone. It is one of the two stereoisomers of clomifene, which itself is a mixture of 38% zuclomifene and 62% enclomifene. Enclomifene is the (E)-stereoisomer of clomifene, while zuclomifene is the (Z)-stereoisomer. Whereas zuclomifene is more estrogenic, enclomifene is more antiestrogenic. In accordance, unlike enclomifene, zuclomifene is antigonadotropic due to activation of the ER and reduces testosterone levels in men. As such, isomerically pure enclomifene is more favorable than clomifene as a progonadotropin for the treatment of male hypogonadism.   Wikipedia

  • SMILES: CCN(CC)CCOc1ccc(cc1)\C(=C(\Cl)/c2ccccc2)\c3ccccc3.OC(=O)CC(O)(CC(=O)O)C(=O)O
  • InChIKey: PYTMYKVIJXPNBD-BTKVJIOYSA-N
  • Mol. Mass: 598.09
  • ALogP: 6.56
  • ChEMBL Molecule:
More Chemistry
enclomiphene citrate

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