Product Details
HMG (Human Menopausal Gonadotropin, Menotropins) — Research Grade Glycoprotein, ≥95% Purity (HPLC)
Dual FSH/LH gonadotropin preparation. Lyophilized powder. Lot-specific COA included.
HMG (human menopausal gonadotropin), also known by its generic name menotropins, is a purified gonadotropin preparation extracted from the urine of postmenopausal women. It contains both follicle-stimulating hormone (FSH) and luteinizing hormone (LH) activity in an approximately 1:1 ratio, with chorionic gonadotropin (hCG) added as needed for standardization. The USP monograph specifies a potency of not less than 40 USP FSH Units and not less than 40 USP LH Units per mg, with not more than 30% of LH activity contributed by added chorionic gonadotropin.
HMG is not a peptide. It is a biologic — a glycoprotein hormone preparation with a molar mass of approximately 23,390 g/mol and an empirical formula of C₁₀₁₄H₁₆₀₉N₂₈₇O₂₉₄S₂₇. Highly purified menotropin (HP-hMG), marketed as Menopur, represents an advanced purified formulation with reduced protein impurities.
Supplied as a sterile-filtered, lyophilized powder for in vitro and preclinical research applications. Each lot is independently verified for purity and identity and ships with a Certificate of Analysis.
Specifications
| Parameter | Detail |
|---|---|
| CAS Number | 9002-68-0; 61489-71-2 |
| UNII Code | 5Y9QQM372Q |
| Empirical Formula | C₁₀₁₄H₁₆₀₉N₂₈₇O₂₉₄S₂₇ |
| Molecular Weight | ~23,390 g/mol |
| Composition | FSH and LH activity, ~1:1 ratio |
| FSH Structure | α-subunit 92 residues; β-subunit 111 residues |
| LH Structure | α-subunit 92 residues; β-subunit 121 residues |
| Purity | ≥95% (HPLC) |
| Identity | Confirmed by mass spectrometry and immunoassay |
| Appearance | White to off-white lyophilized powder |
| Solubility | Soluble in water and aqueous buffers |
| Storage | −20 °C, desiccated, protected from light |
| Format | Lyophilized powder, sterile-filtered |
| Documentation | Lot-specific COA (HPLC + MS) |
Note: HMG is a urinary-derived product. The purity and specific activity may vary by source and purification method. Suppliers list molecular weights ranging from approximately 23,000 to 40,000 Da depending on the glycosylation profile and measurement method. Verify the specific activity, purity, and FSH:LH ratio against the Certificate of Analysis supplied with your lot.
Research applications
HMG is used in laboratory settings to investigate:
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Gonadotropin receptor signaling — dual activation of FSH receptor (FSHR) and LH/choriogonadotropin receptor (LHCGR) and downstream cAMP accumulation in gonadal cell culture models
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Follicular development and oocyte maturation — FSH-mediated granulosa cell proliferation and estrogen production in ovarian tissue models
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Spermatogenesis research — combined FSH and LH activity in Sertoli and Leydig cell co-culture systems, and comparative study with recombinant FSH
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Comparative gonadotropin pharmacology — head-to-head comparison of urinary-derived HMG versus recombinant FSH (rFSH) for receptor binding affinity, potency, and downstream signaling
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Analytical method development — immunoassay calibration, LC-MS/MS quantification, and reference standard preparation for gonadotropin analysis in biological matrices
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Ovarian hyperstimulation syndrome (OHSS) research — mechanistic study of vascular endothelial growth factor (VEGF) and other mediators implicated in OHSS pathogenesis
Handling and storage
Reconstitute under aseptic conditions using sterile water or the diluent supplied with the product. HMG is soluble in water. Aliquot immediately after reconstitution to avoid repeated freeze-thaw cycles. Lyophilized powder is stable for up to 2 years at −20 °C under sealed, desiccated, light-protected conditions. Reconstituted solutions should be stored at 2–8 °C and used within 14–21 days. Do not freeze reconstituted solution.
For laboratory use by qualified personnel only.



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