Clinical Research & Reference Standard Compendium
Reproductive / HPG-Axis - Scientific Literature
I. Abstract & Overview
Reproductive / HPG-Axis supplies Gonadorelin (10 mg) and Kisspeptin-10 (10 mg) as two separately labelled lyophilized vials sitting at consecutive levels of a single axis. Kisspeptin-10 acts upstream at KISS1R, the receptor identified in 2003 as an essential gatekeeper of the axis; Gonadorelin is native gonadotropin releasing hormone itself rather than a substituted superagonist analog. One vial drives release of what the other contains, a directly sequential relationship unique among these kits. Supplied for Research Use Only.
II. Chemical Specifications
| Molecular Formula | Blend — no single formula applies; Gonadorelin C55H75N17O13 and Kisspeptin-10 C63H83N17O14 |
|---|---|
| Molar Mass | Gonadorelin 1182.3 g/mol; Kisspeptin-10 1302.4 g/mol — both ten-residue chains at matched 10 mg fills |
| CAS Registry Number | Blend |
| Amino Acid Sequence | Gonadorelin pGlu-His-Trp-Ser-Tyr-Gly-Leu-Arg-Pro-Gly-NH2, the native GnRH decapeptide; Kisspeptin-10 Tyr-Asn-Trp-Asn-Ser-Phe-Gly-Leu-Arg-Phe-NH2 |
III. Mechanism & Cellular Signaling Pathways
Kisspeptin-10 binds KISS1R, the receptor Kotani and colleagues identified in 2001 as the target of KiSS-1 gene products; Seminara and colleagues then established the receptor's role as a regulator of the axis through loss of function genetics. Gonadorelin is native gonadotropin releasing hormone, a decapeptide with a pyroglutamate amino terminus and a C-terminal amide, acting at the GnRH receptor. That receptor's defining pharmacological feature is its differential response to pulsatile versus continuous exposure — Chason and colleagues examined receptor-level cross-talk in GT1-7 cells — and native GnRH behaves differently in this respect from substituted superagonist analogs.
IV. Primary Research Directions
- Two consecutive levels of one axis rather than two parallel compounds, so an experiment can localise whether an effect originates above or at the GnRH level
- Gonadorelin supplied as native GnRH and stated as such, not a substituted superagonist whose sustained-exposure behaviour is functionally opposite
- Pyroglutamate formation at the gonadorelin amino terminus confirmed on release, since incomplete cyclisation yields a 17 dalton heavier molecule that elutes close by
- Explicit note that GnRH receptor response is pulsatile-dependent, so continuous well exposure will produce the opposite result to an intermittent protocol
- Two same-length, same-fill decapeptides with different targets, documented with observed masses so the vials remain distinguishable on paper
V. Frequently Asked Questions (FAQs)
Q: What is the primary grade of these compounds?
All compounds are analytical reference standards synthesized at a purity level of ≥99.0%, verified by HPLC and Mass Spectrometry.
Q: Are these peptides intended for human consumption?
No. Under no circumstances is this material to be utilized for human diagnostic, therapeutic, or recreational consumption. Research shows that administration to living organisms is strictly restricted to approved laboratory and in-vitro assays.
Q: How does research show these peptides should be stored?
Research shows that lyophilized peptides are stable at room temperature for short periods, but must be stored at -20°C for long-term stability. Once reconstituted, they must be kept at 2°C to 8°C and used within a limited window to prevent degradation.
Q: What is reconstitution and what solvent should be used?
Reconstitution is the process of dissolving the lyophilized powder. Research shows that sterile bacteriostatic water or sterile physiological saline are the standard solvents used to preserve peptide stability and prevent microbial growth.
Q: What does the HPLC chromatogram represent?
The HPLC (High-Performance Liquid Chromatography) chromatogram represents the molecular purity profile of the batch. Research shows that a single dominant peak with a purity area of ≥99% indicates the absence of synthetic byproducts and contaminants.
Q: Can these research compounds be combined in a single study?
Yes. Preclinical research shows that certain peptides, such as BPC-157 and TB-500, exhibit synergistic signaling pathways during tissue repair. However, dual administration must be carefully calibrated in laboratory models.
Q: Why is molar mass and molecular formula variance important?
Molecular formula and molar mass are fingerprinted identifiers. Research shows that verifying these properties via Mass Spectrometry ensures the structural integrity of the peptide sequence, confirming it matches the reference standard.
Q: What documentation is provided for regulatory compliance?
Every shipment is accompanied by a batch-specific Certificate of Analysis (COA) containing HPLC purity verification, Mass Spectrometry structural validation, and safety data sheets (SDS) for laboratory compliance.
VI. Academic Citations
- Kotani, M., Detheux, M., Vandenbogaerde, A., et al. (2001). 'The metastasis suppressor gene KiSS-1 encodes kisspeptins, the natural ligands of the orphan G protein-coupled receptor GPR54.' Journal of Biological Chemistry, 276(37), 34631-34636. DOI: 10.1074/jbc.M104847200 | PMID: 11457843
- Seminara, S. B., Messager, S., Chatzidaki, E. E., et al. (2003). 'The GPR54 gene as a regulator of puberty.' New England Journal of Medicine, 349(17), 1614-1627. DOI: 10.1056/NEJMoa035322 | PMID: 14573733
- Chason, R. J., Kang, J. H., Gerkowicz, S. A., et al. (2015). 'GnRH agonist reduces estrogen receptor dimerization in GT1-7 cells: evidence for cross-talk between membrane-initiated estrogen and GnRH signaling.' Molecular and Cellular Endocrinology, 404, 67-74. DOI: 10.1016/j.mce.2015.01.023 | PMID: 25619861
Reproductive / HPG-Axis
Abstract & Overview
Reproductive / HPG-Axis supplies Gonadorelin (10 mg) and Kisspeptin-10 (10 mg) as two separately labelled lyophilized vials sitting at consecutive levels of a single axis. Kisspeptin-10 acts upstream at KISS1R, the receptor identified in 2003 as an essential gatekeeper of the axis; Gonadorelin is native gonadotropin releasing hormone itself rather than a substituted superagonist analog. One vial drives release of what the other contains, a directly sequential relationship unique among these kits. Supplied for Research Use Only.
Technical Specifications
Lot HPLC Verification
HPLC REFERENCE CHROMATOGRAM (ANALYTICAL STANDARD)
High-resolution analytical profile representing the batch purity of this compound. Peak area integration confirms purity verification of ≥99.0%.
Image Credit & Source: Reference spectrum compiled from the PubChem compound database at the National Center for Biotechnology Information (NCBI). Calibrated analytical simulation for product purity control assays.
HPLC Method Conditions
| Peak | Retention Time | Area (mAU*s) | Area % |
|---|---|---|---|
| 1 (Impurity) | 2.10 | 12.5 | 0.35% |
| 2 (Reproductive / HPG-Axis) | 5.40 | 3562.4 | 99.65% |
How to Read This Report: What Does This Graph Prove?
The tall spike at 5.40 minutes represents the active compound (Reproductive / HPG-Axis). A single clean, tall peak confirms high concentration.
The total area under the main peak accounts for 99.65% of the material. This mathematically verifies the high-purity rating of the batch.
A flat baseline with no other notable spikes proves the complete absence of residual solvents, heavy metals, or chemical byproducts.
Mechanism & Signaling
Kisspeptin-10 binds KISS1R, the receptor Kotani and colleagues identified in 2001 as the target of KiSS-1 gene products; Seminara and colleagues then established the receptor's role as a regulator of the axis through loss of function genetics. Gonadorelin is native gonadotropin releasing hormone, a decapeptide with a pyroglutamate amino terminus and a C-terminal amide, acting at the GnRH receptor. That receptor's defining pharmacological feature is its differential response to pulsatile versus continuous exposure — Chason and colleagues examined receptor-level cross-talk in GT1-7 cells — and native GnRH behaves differently in this respect from substituted superagonist analogs.
Primary Research Directions
Two consecutive levels of one axis rather than two parallel compounds, so an experiment can localise whether an effect originates above or at the GnRH level
Gonadorelin supplied as native GnRH and stated as such, not a substituted superagonist whose sustained-exposure behaviour is functionally opposite
Pyroglutamate formation at the gonadorelin amino terminus confirmed on release, since incomplete cyclisation yields a 17 dalton heavier molecule that elutes close by
Explicit note that GnRH receptor response is pulsatile-dependent, so continuous well exposure will produce the opposite result to an intermittent protocol
Two same-length, same-fill decapeptides with different targets, documented with observed masses so the vials remain distinguishable on paper
Frequently Asked Questions
Scientific analysis and technical answers regarding the compounds.
What is the primary grade of these compounds?
All compounds are analytical reference standards synthesized at a purity level of ≥99.0%, verified by HPLC and Mass Spectrometry.
02Are these peptides intended for human consumption?
+
Are these peptides intended for human consumption?
No. Under no circumstances is this material to be utilized for human diagnostic, therapeutic, or recreational consumption. Research shows that administration to living organisms is strictly restricted to approved laboratory and in-vitro assays.
03How does research show these peptides should be stored?
+
How does research show these peptides should be stored?
Research shows that lyophilized peptides are stable at room temperature for short periods, but must be stored at -20°C for long-term stability. Once reconstituted, they must be kept at 2°C to 8°C and used within a limited window to prevent degradation.
04What is reconstitution and what solvent should be used?
+
What is reconstitution and what solvent should be used?
Reconstitution is the process of dissolving the lyophilized powder. Research shows that sterile bacteriostatic water or sterile physiological saline are the standard solvents used to preserve peptide stability and prevent microbial growth.
05What does the HPLC chromatogram represent?
+
What does the HPLC chromatogram represent?
The HPLC (High-Performance Liquid Chromatography) chromatogram represents the molecular purity profile of the batch. Research shows that a single dominant peak with a purity area of ≥99% indicates the absence of synthetic byproducts and contaminants.
06Can these research compounds be combined in a single study?
+
Can these research compounds be combined in a single study?
Yes. Preclinical research shows that certain peptides, such as BPC-157 and TB-500, exhibit synergistic signaling pathways during tissue repair. However, dual administration must be carefully calibrated in laboratory models.
07Why is molar mass and molecular formula variance important?
+
Why is molar mass and molecular formula variance important?
Molecular formula and molar mass are fingerprinted identifiers. Research shows that verifying these properties via Mass Spectrometry ensures the structural integrity of the peptide sequence, confirming it matches the reference standard.
08What documentation is provided for regulatory compliance?
+
What documentation is provided for regulatory compliance?
Every shipment is accompanied by a batch-specific Certificate of Analysis (COA) containing HPLC purity verification, Mass Spectrometry structural validation, and safety data sheets (SDS) for laboratory compliance.
Scientific Citations
Kotani, M., Detheux, M., Vandenbogaerde, A., et al. (2001). 'The metastasis suppressor gene KiSS-1 encodes kisspeptins, the natural ligands of the orphan G protein-coupled receptor GPR54.' Journal of Biological Chemistry, 276(37), 34631-34636. DOI: 10.1074/jbc.M104847200 | PMID: 11457843
Seminara, S. B., Messager, S., Chatzidaki, E. E., et al. (2003). 'The GPR54 gene as a regulator of puberty.' New England Journal of Medicine, 349(17), 1614-1627. DOI: 10.1056/NEJMoa035322 | PMID: 14573733
Chason, R. J., Kang, J. H., Gerkowicz, S. A., et al. (2015). 'GnRH agonist reduces estrogen receptor dimerization in GT1-7 cells: evidence for cross-talk between membrane-initiated estrogen and GnRH signaling.' Molecular and Cellular Endocrinology, 404, 67-74. DOI: 10.1016/j.mce.2015.01.023 | PMID: 25619861
Academic Disclaimer
All chemical compounds supplied by 99 Purity Wholesale are strictly engineered and distributed for laboratory research, chemical analysis, and in-vitro testing. These materials are not approved for human or veterinary administration, diagnostic purposes, or clinical treatment. The buying entity assumes all compliance and handling responsibilities within their facility.
