Clomifen 50mg

$35.00

Chemical Information and Compositions of Clomifen 50mg

For researchers, biochemists, and wholesale distributors, the molecular structure of Clomifen 50mg is fascinating and unique. It belongs to the triphenylethylene class of compounds, sharing structural similarities with Tamoxifen (Nolvadex) and Toremifene. Understanding its composition is vital for analytical testing and formulation.

Official Chemical Nomenclature

  • Chemical Name: 2-[2-(4-chlorophenyl)ethenyl]-2-(4-methoxyphenyl)-1,2-diphenylethan-1-ol; 2-hydroxypropane-1,2,3-tricarboxylic acid
  • Chemical Formula: C32H36ClNO8 (as the Citrate salt)
  • Molecular Weight: 598.09 g/mol (as the Citrate salt). The base Clomiphene has a molecular weight of 405.97 g/mol.
  • CAS Number: 50-41-9

Structural Composition Breakdown

Clomifen 50mg is a racemic mixture; it contains two distinct geometric isomers (enantiomers) in equal proportions. These isomers have entirely different pharmacological activities, which is what gives Clomiphene its complex SERM profile:

  1. Zuclomiphene (The Cis Isomer): This isomer constitutes approximately 30% to 50% of the mixture (historically cited as ~38%). Zuclomiphene is primarily estrogenic (agonist) in nature. While it binds to the estrogen receptor, it activates it in certain tissues (like the ovaries and bone). It has a very long half-life and accumulates in the body over time.
  2. Enclomiphene (The Trans Isomer): This isomer constitutes approximately 60% to 70% of the mixture. Enclomiphene is highly anti-estrogenic (antagonist) in nature. It binds strongly to estrogen receptors in the hypothalamus and breast tissue, blocking the action of endogenous estradiol.

The interplay between the anti-estrogenic Enclomiphene and the estrogenic Zuclomiphene allows Clomifen 50mg to stimulate ovulation (via hypothalamic blockade and ovarian sensitization) without causing severe bone density loss or total estrogenic suppression.

Physical and Chemical Properties

  • State at Room Temperature: Solid (Crystalline Powder)
  • Color: White to pale yellow
  • Solubility: Slightly soluble in water (which is why it is formulated as a citrate salt to improve bioavailability); freely soluble in ethanol, chloroform, and methanol; practically insoluble in ether.
  • Melting Point: Approximately 116.5°C to 118°C (as the citrate salt).

Pharmacokinetics

  • Route of Administration: Oral
  • Absorption: Rapidly and well absorbed from the gastrointestinal tract.
  • Half-Life: The half-life of Clomifen 50mg is exceptionally long. Enclomiphene has a half-life of roughly 11 hours, but Zuclomiphene has a half-life of several weeks. Because of the long-lived Zuclomiphene isomer, metabolites of Clomifen 50mg can be detected in feces up to 6 weeks after administration. This long half-life means the compound accumulates with daily dosing, and effects persist long after the last pill is taken.
  • Metabolism: Extensively metabolized in the liver, primarily via CYP2D6 and CYP3A4 enzymes. It is excreted primarily in the feces via biliary elimination.

Formulation Details: The 50mg Pill

When you source wholesale Clomifen 50mg, you are purchasing the Citrate salt formulation. A 50mg pill contains 50mg of Clomiphene Citrate, which equates to approximately 33.9mg of base Clomiphene. Standard excipients used in the tableting process include lactose monohydrate, microcrystalline cellulose, pregelatinized starch (corn), magnesium stearate, and crosscarmellose sodium. For B2B buyers, the uniform blending of the active API with these excipients is critical to ensure accurate dosing in every pill.

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