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Ipamorelin
$59.99
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| 5 - 10 | 5% | $56.99 |
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| 21+ | 15% | $50.99 |
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*Disclaimer: This product is intended solely for laboratory research purposes. It is not suitable for consumption by humans, nor for medical, veterinary, or household purposes. Kindly review our Terms & Conditions before making a purchase.
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At every step, we prioritize quality by conducting rigorous third-party testing on all our products. These tests focus on five key characteristics- identity, purity, sterility, and endotoxin levels, and heavy metal content-ensuring that each product meets the highest standards of quality with independent third-party Certificates of Analysis (COAS) to verify our commitment to excellence.
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Sterility Test
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Heavy Metals Test
*Disclaimer: This product is intended solely for laboratory research purposes. It is not suitable for consumption by humans, nor for medical, veterinary, or household purposes.Kindly review our Terms & Conditions before making a purchase.
Ipamorelin (10mg) Overview
Ipamorelin is a synthetic pentapeptide growth hormone secretagogue that selectively targets the ghrelin receptor (GHS-R1a). Researchers looking to buy Ipamorelin often focus on its role in studying receptor-mediated regulation of pulsatile growth hormone release and pituitary signaling. Its high receptor specificity makes it particularly useful in controlled models examining endocrine feedback and signal transduction pathways. Within laboratory settings, Ipamorelin is commonly applied in receptor binding assays, intracellular signaling studies, and experimental models of hormone regulation. Spark Peptide supports consistent research outcomes through HPLC-verified purity, mass spectrometry confirmation, and batch-specific Certificates of Analysis (COA), ensuring suitability for in-vitro systems and pathway-level investigations.Ipamorelin: Molecular Origin
Ipamorelin is a synthetic pentapeptide classified within the growth hormone–releasing peptide (GHRP) family, designed as a selective agonist of the growth hormone secretagogue receptor (GHS-R1a) [1]. It originates from earlier GHRP compounds developed in the 1980s and 1990s during research into non-GHRH-mediated stimulation of growth hormone release. These efforts followed the identification of synthetic peptides capable of activating pituitary GH secretion independently of hypothalamic growth hormone–releasing hormone pathways, ultimately contributing to the discovery of the ghrelin receptor system. Structurally, Ipamorelin is composed of a short, defined amino acid sequence engineered to optimize receptor affinity while minimizing interaction with non-target pathways. Its pentapeptide configuration enables selective binding to GHS-R1a with reduced activity at other receptor sites commonly affected by earlier GHRPs. The peptide is synthesized using solid-phase peptide synthesis (SPPS), allowing precise assembly of its sequence and consistent structural replication. This combination of structural simplicity and receptor specificity makes Ipamorelin a valuable model for studying GPCR-mediated signaling, hormone secretion dynamics, and selective pathway activation within endocrine research systems.Purity & Quality Standards
Ipamorelin supplied by Spark Peptide is produced to purity levels exceeding 99.9%, verified through high-performance liquid chromatography (HPLC) to ensure consistent composition across batches. This level of precision is achieved through advanced peptide synthesis under controlled manufacturing conditions that follow cGMP-certified processes aligned with ISO 9001:2015 quality systems, supporting reproducibility in laboratory research. Each batch undergoes Spark Peptide’s 6X Safety Testing protocol, which includes HPLC purity analysis and mass spectrometry confirmation of molecular identity, along with screening for heavy metals, endotoxins, and microbial contamination. Solubility and stability testing are also performed to validate handling characteristics. Batch-specific Certificates of Analysis (COA) are provided to document these results, with protective packaging used to maintain stability of the lyophilized peptide during transit. See our Tests & Safety page for Certificates of Analysis from the latest batch tests.Ipamorelin Mechanism of Action
Ipamorelin is studied as a selective growth hormone secretagogue that modulates endocrine signaling through targeted activation of the ghrelin receptor (GHS-R1a). Its mechanism is characterized by receptor-specific signaling, making it a well-defined model for investigating GPCR-mediated hormone release, intracellular signaling cascades, and feedback regulation within the hypothalamic–pituitary axis.Receptor Binding & Primary Signaling
Ipamorelin binds selectively to the growth hormone secretagogue receptor type 1a (GHS-R1a), a class A G protein–coupled receptor (GPCR) expressed primarily in the anterior pituitary and hypothalamus [1]. Binding studies have demonstrated high receptor affinity in the low nanomolar range, with significantly reduced interaction at other receptor systems compared to earlier GHRPs. Its pentapeptide structure contributes to this selectivity, enabling targeted receptor engagement without broad activation of related endocrine pathways. Upon ligand binding, GHS-R1a undergoes conformational activation and couples predominantly to Gq/11 proteins, initiating phospholipase C (PLC) signaling. This leads to the production of inositol trisphosphate (IP3) and diacylglycerol (DAG), resulting in intracellular calcium mobilization from endoplasmic reticulum stores. The increase in cytosolic Ca²⁺ is a key early event that triggers downstream signaling processes involved in hormone secretion. These primary signaling events establish Ipamorelin as a precise tool for studying receptor-specific activation within GPCR systems.Downstream Biological Cascades
Following receptor activation, Ipamorelin-induced calcium signaling drives exocytosis of growth hormone from pituitary somatotroph cells, a process observed in both in-vitro and preclinical models [1]. In addition to immediate secretory responses, downstream signaling cascades include activation of MAPK/ERK and PI3K/Akt pathways, which are associated with cellular signaling regulation and endocrine feedback mechanisms. Experimental studies have also indicated that Ipamorelin influences transcriptional activity related to hormone synthesis and receptor sensitivity, contributing to sustained signaling effects beyond initial calcium-mediated events. These processes are often evaluated through measurable endpoints such as intracellular signaling markers, gene expression profiles, and hormone secretion dynamics. At a systems level, Ipamorelin is used to investigate coordinated signaling within the hypothalamic–pituitary axis, including receptor sensitivity, pulsatile hormone release patterns, and pathway integration. Its receptor specificity and well-characterized signaling profile make it particularly valuable in studies focused on GPCR function, endocrine regulation, and controlled activation of hormone secretion pathways.Key Scientific Features & Chemical Profile of Ipamorelin
The following molecular data outlines key chemical identifiers and physical characteristics of Ipamorelin, supporting accurate compound verification, handling, and reproducibility in laboratory research settings.Molecular Data
| Property | Value |
| Molecular Formula | C38H49N9O5 |
| Molecular Weight | 711.9 g/mol |
| Amino Acid Sequence | Aib-His-D-2-Nal-D-Phe-Lys-NH₂ (Condensed sequence: XHXFK) |
| Structural Class | Synthetic pentapeptide; growth hormone secretagogue (GHS) |
| CAS Number | 170851-70-4 |
| PubChem CID | 9831659 |
| Synonyms | Ipamorelin; NNC 26-0161 |
| Physical Form | Lyophilized white powder |
| Solubility | Soluble in water and aqueous laboratory buffers |
| Storage | -4°F (-20°C), desiccated, protected from light; after reconstitution: 36–46°F (2–8°C) |
| Stability | Stable in lyophilized form under cold, dry, light-protected conditions |
Analytical Verification
Each batch of Ipamorelin supplied by Research Peptides is accompanied by a Certificate of Analysis (COA) generated through independent third-party laboratory testing, providing verified data on identity, purity, and safety parameters. As per industry standards, purity is assessed using high-performance liquid chromatography (HPLC) which is where the peptide is separated into individual components and quantified to confirm ≥99.9% purity. Molecular identity is confirmed through mass spectrometry (MS), with observed mass-to-charge ratios matched against the theoretical molecular mass of the pentapeptide sequence. To ensure consistency across research applications, Spark Peptide applies its 6X Safety Testing protocol, incorporating multiple layers of analytical validation:- HPLC purity analysis: confirms peptide composition and detects trace impurities
- Mass spectrometry (MS): verifies molecular identity and structural accuracy
- Heavy metals screening: detects trace elemental contaminants that may interfere with assays
- Endotoxin testing: identifies pyrogenic substances that could impact in-vitro systems
- Bacterial contamination analysis: ensures microbial integrity of the sample
- Solubility and stability assessment: confirms predictable handling and storage behavior
Storage, Handling, and Reconstitution
Proper storage and preparation of Ipamorelin peptide are essential for maintaining peptide integrity and ensuring consistent behavior in receptor-based assays and signaling studies. As a short-chain synthetic peptide, ipamorelin’s stability depends on controlled temperature, protection from environmental exposure, and careful reconstitution to preserve structural fidelity during laboratory use.Recommended Storage Conditions
Lyophilized Ipamorelin should be stored at -4°F (-20°C) in a sealed, desiccated vial, protected from light and moisture to prevent degradation. Under these conditions, the peptide remains stable for extended periods. After reconstitution, solutions should be stored at 36–46°F (2–8°C) and used within a defined laboratory timeframe to maintain stability and minimize degradation.Reconstitution Protocol
Reconstitution should be carried out under sterile laboratory conditions:- Allow the vial to reach room temperature before opening to avoid condensation.
- Add bacteriostatic water (e.g., Spark Peptide’s Bacteriostatic Water 10ml) slowly along the vial wall.
- Use an appropriate solvent volume depending on the required concentration (commonly 1–3 mL in laboratory preparation).
- Do not shake or vortex; gently swirl the vial until the peptide is fully dissolved.
- Confirm that the solution appears clear and free of visible particulates before use.
- Store the reconstituted solution at 36–46°F (2–8°C) and avoid prolonged storage.
Handling Precautions
Ipamorelin should be handled in a clean laboratory environment using sterile techniques to minimize contamination. Repeated freeze–thaw cycles should be avoided, as they may affect peptide stability. Appropriate personal protective equipment, including gloves and lab coats, should be used during handling. All procedures should follow established laboratory protocols, and the compound is intended strictly for research use only.Ipamorelin Research & Scientific Applications
Ipamorelin is widely used in experimental systems investigating ghrelin receptor signaling, growth hormone regulation, and GPCR-mediated intracellular pathways. Preclinical research data suggests that its high selectivity for GHS-R1a provides a controlled model for studying pulsatile hormone release, receptor activation dynamics, and downstream signaling cascades within endocrine research frameworks.Preclinical & Diagnostic Research
In-vitro studies have demonstrated that Ipamorelin selectively activates the growth hormone secretagogue receptor (GHS-R1a), enabling precise investigation of ghrelin-mediated signaling pathways [1][3]. Receptor binding assays and pituitary cell culture models have shown that Ipamorelin induces intracellular calcium mobilization through Gq/11-mediated phospholipase C activation, leading to measurable increases in second messengers such as IP3 and cytosolic Ca²⁺. These signaling events are commonly quantified using fluorescence-based calcium assays, receptor activation markers, and downstream transcriptional profiling. Published findings also indicate that Ipamorelin exhibits greater receptor specificity compared to earlier GHRPs, with reduced activation of non-target endocrine pathways [1][3]. This selectivity makes it particularly useful in studies aiming to isolate GHS-R1a signaling without broader receptor interference. Experimental systems often evaluate endpoints such as hormone secretion dynamics, receptor sensitivity, and intracellular signaling markers, including MAPK/ERK pathway activation. In diagnostic and mechanistic research, Ipamorelin has been applied in models examining pituitary responsiveness and receptor pathway characterization. Its defined receptor interaction profile supports investigations into GPCR signaling fidelity, ligand-receptor kinetics, and endocrine feedback mechanisms under controlled laboratory conditions.Animal Model Observations
Animal studies have reported that Ipamorelin induces measurable increases in growth hormone secretion patterns in rodent models, with experimental findings suggesting enhanced pulsatile release compared to baseline conditions [4]. These observations are typically quantified through circulating biomarker analysis and temporal profiling of hormone secretion patterns. Rodent models have also demonstrated activation of intracellular signaling pathways associated with GHS-R1a stimulation, including calcium-dependent cascades and downstream MAPK/ERK signaling [5]. These pathway activations are often assessed through tissue analysis, protein expression studies, and molecular signaling assays. Additional experimental investigations suggest that Ipamorelin maintains a more selective signaling profile compared to earlier secretagogues, with reduced off-target endocrine activity observed in preclinical models [1]. This characteristic supports its use in studies focused on receptor specificity, signaling pathway isolation, and controlled investigation of ghrelin receptor–mediated endocrine responses. At a systems level, Ipamorelin is frequently used to examine coordinated signaling within the hypothalamic–pituitary axis, including receptor activation patterns, hormone release timing, and pathway integration. Its specificity and well-characterized mechanism make it a reliable model for studying GPCR-driven endocrine signaling in controlled animal research settings.Comparative Analysis: Ipamorelin vs GHRP-6 vs CJC-1295 (DAC)
Understanding how Ipamorelin compares to other growth hormone secretagogues provides useful context for selecting appropriate models in receptor-based research. Unlike earlier GHRPs, Ipamorelin was specifically engineered for higher selectivity at the ghrelin receptor (GHS-R1a), allowing more controlled investigation of GPCR-mediated signaling pathways with reduced off-target activity. Comparative studies indicate that, relative to GHRP-6, Ipamorelin demonstrates greater receptor specificity with minimal interaction at pathways associated with prolactin or cortisol signaling, making it more suitable for studies focused on isolated ghrelin receptor activation [1]. In contrast to CJC-1295 (DAC), which acts on the GHRH receptor and exhibits extended half-life due to albumin binding, Ipamorelin operates through a distinct receptor system with shorter persistence, enabling more precise temporal analysis of signaling events. These mechanistic differences make Ipamorelin particularly valuable in experiments requiring clean receptor activation and minimal pathway interference.| Parameter | Ipamorelin | GHRP-6 | CJC-1295 (DAC) |
| Half-life | Short-acting; rapid receptor engagement | Short-acting; broader systemic activity | Long-acting; albumin-bound persistence |
| Receptor Selectivity | Highly selective for GHS-R1a | GHS-R1a with broader off-target activity | GHRH receptor selective |
| Primary Mechanism | Gq-mediated Ca²⁺ signaling via GHS-R1a | GHS-R activation with additional endocrine pathway interaction | Gs-mediated cAMP signaling via GHRH-R |
| Research Applications | GPCR signaling studies; pulsatile GH modeling | Early secretagogue research; broader endocrine signaling | Long-duration GH pathway studies |
Peer-Reviewed Research & Citations
- Raun, K., Hansen, B. S., Johansen, N. L., Thøgersen, H., Madsen, K., Ankersen, M., & Andersen, P. H. (1998). Ipamorelin, the first selective growth hormone secretagogue. European Journal of Endocrinology, 139(5), 552–561. https://doi.org/10.1530/eje.0.1390552
- Howick, K., Griffin, B. T., Cryan, J. F., & Schellekens, H. (2017). From belly to brain: Targeting the ghrelin receptor in appetite and food intake regulation. International Journal of Molecular Sciences, 18(2), 273. https://doi.org/10.3390/ijms18020273
- Jimenez-Reina, L., Cañete, R., De la Torre, M. J., & Bernal, G. (2002). Chronic in vivo ipamorelin treatment stimulates body weight gain and growth hormone (GH) release in vitro in young female rats. European Journal of Anatomy, 6(1), 37–45.
- Peroni, C. N., Hayashida, C. Y., Nascimento, N., Longuini, V. C., Toledo, R. A., Bartolini, P., Bowers, C. Y., & Toledo, S. P. (2012). Growth hormone response to growth hormone-releasing peptide-2 in growth hormone-deficient little mice. Clinics, 67(3), 265–272. https://doi.org/10.6061/clinics/2012(03)11
- Greenwood-Van Meerveld, B., Tyler, K., Mohammadi, E., & Pietra, C. (2012). Efficacy of ipamorelin, a ghrelin mimetic, on gastric dysmotility in a rodent model of postoperative ileus. Journal of Experimental Pharmacology, 4, 149–155. https://doi.org/10.2147/JEP.S35396
Certificate of Analysis & Lab Reports
Each batch of Ipamorelin is supplied with a Certificate of Analysis (COA) generated through independent third-party laboratory testing. This documentation provides batch-specific verification of peptide identity, purity, and safety parameters, forming a core component of Spark Peptide’s 6X Safety Testing protocol and supporting traceability across laboratory research applications. The COA details the analytical results associated with the specific production lot, including purity confirmation via high-performance liquid chromatography (HPLC) and molecular identity verification through mass spectrometry (MS). It also includes key batch information such as lot number, testing dates, and analytical methods used, allowing researchers to independently review and validate the material prior to experimental use.HPLC Analysis Report
High-performance liquid chromatography (HPLC) is used to evaluate the chemical purity of Ipamorelin by separating peptide components based on their interactions with the chromatographic column. This enables accurate quantification of the primary peptide peak relative to any detectable impurities within the sample. This batch: ≥99.9% purity via HPLCMass Spectrometry Report
Mass spectrometry (MS) is used to confirm molecular identity by measuring the mass-to-charge ratio (m/z) of ionized peptide fragments. The resulting spectral data is compared with the theoretical molecular mass derived from the peptide’s amino acid sequence, verifying structural integrity and sequence accuracy.Additional Safety Screening
As part of the 6X Safety Testing protocol, each batch undergoes additional analytical screening to ensure suitability for laboratory use. This includes heavy metals testing for trace elemental contaminants, endotoxin analysis to detect pyrogenic substances, and bacterial contamination screening. Solubility and stability assessments are also performed to confirm predictable handling characteristics. Complete analytical reports are available upon request or through the Spark Peptide Tests & Safety page, providing full transparency and supporting reproducibility in research environments.Why 6X Safety Testing Matters for Your Research
While most suppliers verify purity alone, every SparkPeptide batch passes six independent quality and safety screenings before reaching your laboratory.| # | Test | What It Confirms |
| 1 | HPLC Purity Analysis | Peptide purity at 99.9%+ via reverse-phase chromatography |
| 2 | Mass Spectrometry | Correct molecular identity (observed vs. expected mass) |
| 3 | Heavy Metal Screening | Below detectable limits for lead, mercury, arsenic, cadmium |
| 4 | Endotoxin Testing | Bacterial endotoxin levels within safe research thresholds (LAL assay) |
| 5 | Bacterial Contamination | No microbial growth detected in culture testing |
| 6 | Solubility & Stability | Proper reconstitution behavior and structural integrity confirmed |
Legal Disclaimer
For Laboratory Research Use Only. All products sold by Spark Peptide are strictly intended for laboratory research use only. These materials are not for human consumption and are not intended for medical, veterinary, diagnostic, or household use of any kind. Spark Peptide operates solely as a research chemical supplier. We are not a compounding pharmacy and do not operate as a compounding facility as defined under Section 503A of the Federal Food, Drug, and Cosmetic Act. Additionally, Spark Peptide is not registered as an outsourcing facility under Section 503B of the Act. By purchasing from our site, you agree to use our products exclusively for lawful laboratory research purposes. Any misuse is strictly prohibited.Product FAQ for Researchers
How is Ipamorelin purity verified before release?
Ipamorelin is verified to ≥99.9% purity using high-performance liquid chromatography (HPLC), which separates and quantifies peptide components within each batch. Molecular identity is confirmed via mass spectrometry. These analyses are part of Spark Peptide’s 6X Safety Testing protocol, which also includes screening for heavy metals, endotoxins, and microbial contamination, with all results documented in batch-specific Certificates of Analysis.What is the correct way to reconstitute Ipamorelin for laboratory use?
Ipamorelin should be reconstituted using bacteriostatic water under sterile conditions. Allow the vial to reach room temperature before adding solvent slowly along the vial wall to avoid agitation. Gently swirl the vial to dissolve the peptide—do not vortex. For consistency in preparation, researchers may use Spark Peptide’s Bacteriostatic Water 10ml when preparing solutions.What storage conditions maintain Ipamorelin stability?
Lyophilized Ipamorelin should be stored at -4°F (-20°C), protected from light and moisture to preserve stability. Under these conditions, it remains stable for extended periods. After reconstitution, the solution should be refrigerated at 36–46°F (2–8°C) and used within a defined laboratory timeframe to maintain structural integrity.Does Ipamorelin include batch-specific analytical documentation?
Yes. Every batch of Ipamorelin is accompanied by a Certificate of Analysis (COA) generated through independent third-party testing. The COA confirms identity via mass spectrometry, verifies purity through HPLC analysis, and includes safety screening data. This documentation is accessible from the product page, ensuring transparency and traceability for laboratory use.How is Ipamorelin packaged and shipped to maintain stability?
Ipamorelin is supplied in lyophilized form and packaged using protective materials designed to minimize exposure to temperature fluctuations, light, and moisture during transit. Standard laboratory shipping practices are followed, and qualifying orders receive free shipping, supporting secure and stable delivery of research-grade materials.What makes Ipamorelin useful for receptor-specific research?
Ipamorelin is a selective agonist of the ghrelin receptor (GHS-R1a), making it a precise tool for studying GPCR-mediated signaling. Its high receptor specificity allows researchers to investigate calcium-dependent signaling pathways, hormone secretion dynamics, and receptor activation mechanisms without significant off-target pathway interference.| Property | Detail |
|---|---|
| Name | Tesamorelin |
| Classification | Synthetic analogue of human growth hormone-releasing hormone (GHRH); N-terminus modified with trans-3-hexenoic acid group for enhanced stability |
| Sequence | Ac-Tyr-D-Ala-Asp-Ala-Ile-Phe-Thr-Asn-Ser-Tyr-Arg-Lys-Val-Leu-Gly-Gln-Leu-Ser-Ala-Arg-Lys-Leu-Leu-Gln-Asp-Ile-Leu-Ser-Arg-NH₂ |
| Molecular Weight | ~3,859 Da (minor variation may occur depending on synthesis and salt form) |
| Peptide Length | 44 amino acids |
| Receptor Target | GHRH receptor — somatotroph cells of the anterior pituitary |
| Primary Research Pathways | GHRH receptor activation; GH–IGF-1 axis stimulation; lipid metabolism and visceral adipose tissue regulation; hypothalamic–pituitary feedback preservation |
| Stability Feature | N-terminal hexenoyl moiety confers resistance to DPP-IV enzymatic degradation; significantly extended half-life vs. unmodified GHRH |
| Format | Lyophilized powder supplied in sterile glass research vials |
| Purity | ≥99%, verified by lot-specific Certificate of Analysis (COA) |
| Solubility | Soluble in sterile water or appropriate aqueous laboratory-grade buffers |
| Storage (Lyophilized) | –20°C to –10°C (–4°F to 14°F), protected from light and moisture; avoid prolonged exposure to ambient humidity |
| Storage (Reconstituted) | 2–8°C (36–46°F) for short-term use (several days); aliquot into sterile containers and store at –70°C to –80°C (–94°F to –112°F) for long-term storage |
| Handling Notes | Add solvent gently along vial wall; avoid vigorous shaking or agitation; minimize freeze–thaw cycles; handle under aseptic laboratory conditions using appropriate PPE |
| Batch | EP-250522-TE10 |
| Research Designation | For research use only — not approved for human or veterinary use, clinical administration, or therapeutic application |
| Supplier | Spark Peptide |
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