Sermorelin is a synthetic 29-amino-acid peptide corresponding to the biologically active N-terminal fragment of human growth hormone-releasing hormone, GHRH(1-29). For research teams studying the growth hormone axis, pituitary receptor pharmacology, and neuroendocrine signaling, it is the shortest GHRH sequence reported to retain full activity. Puritide Research supplies Sermorelin as a high-purity, research-use-only material, synthesized for in vitro and animal-model work and backed by third-party-verified certificates of analysis so your data rests on consistent, documented quality.
Available Sizes
- ›Sermorelin 5mg Vial
- ›Sermorelin 10mg Vial
Product Specifications
- Application
- Growth hormone axis and GHRH receptor signaling research
- Appearance
- Solid, white lyophilized powder in a sealed glass vial
- Chemical Formula
- C149H246N44O42S
- PubChem SID
- 16132413
- CAS Number
- 86168-78-7
- Molecular Weight
- ~3357.93 g/mol
- Synonyms
- Sermorelin, GHRH(1-29), GRF(1-29), Sermorelin acetate, GHRH analog
- Storage
- Store at ≤25°C, sealed, away from heat, light, and moisture. For extended storage, keep lyophilized and refrigerated or frozen.
What Is Sermorelin?
Sermorelin is a synthetic peptide comprising the first 29 amino acids of endogenous human growth hormone-releasing hormone (GHRH). It is the shortest fragment of GHRH reported to retain the full biological activity of the native 44-residue hormone, which is why it is widely used as a GHRH analog in research.
In experimental settings, Sermorelin is used to study the growth hormone axis, GHRH receptor (GHRHR) pharmacology on anterior pituitary cells, and the pulsatile signaling that governs growth hormone release. It also appears in neuroendocrine, metabolic, and signal-transduction research as a tool for probing hypothalamic-pituitary regulation.
Present understanding derives from in vitro assays, animal models, and clinical research. Findings should be interpreted within their experimental context and not treated as established outcomes for any unapproved use. Puritide Research supplies Sermorelin strictly for laboratory use; it is not approved by Puritide Research for human or veterinary application.
Sermorelin Mechanism of Action (Research Only)
Sermorelin is studied as a GHRH receptor agonist that models the physiological signaling of endogenous growth hormone-releasing hormone. The mechanisms below reflect observations from biochemical assays, cell-culture studies, and animal models, and should be read strictly in a research context.
Structural Basis
As the GHRH(1-29) fragment, Sermorelin retains the N-terminal sequence responsible for receptor binding and activation while omitting the C-terminal residues that are not required for full activity. Researchers study this minimal active sequence when investigating structure-activity relationships within the GHRH family.
GHRH Receptor Signaling & the Growth Hormone Axis
Sermorelin research centers on engagement of the GHRH receptor (GHRHR), a G-protein-coupled receptor expressed on anterior pituitary somatotrophs. Receptor activation is associated with cAMP-mediated signaling that stimulates the synthesis and pulsatile release of growth hormone in model systems.
Because it acts upstream at the pituitary rather than substituting for growth hormone directly, Sermorelin is used to study feedback regulation and the physiological rhythm of the growth hormone axis.
Across these studies, Sermorelin serves as a research tool for characterizing GHRH receptor pharmacology and neuroendocrine signaling under controlled conditions.
Sermorelin Research Applications
Sermorelin is investigated across preclinical and translational studies as a GHRH analog for exploring the growth hormone axis and neuroendocrine biology. The observations below derive from biochemical studies, cell-based assays, and animal models, and should be interpreted within their respective settings.
Growth Hormone Axis & Pituitary Receptor Studies
A primary application is characterizing GHRH receptor binding, activation, and downstream signaling in pituitary and receptor-expressing cell models.
Sermorelin is also used to study the pulsatile dynamics of growth hormone release and feedback regulation of the hypothalamic-pituitary axis, and as a comparator alongside other growth hormone secretagogues in mechanistic work.
Neuroendocrine, Metabolic & Translational Models
Researchers use Sermorelin to investigate neuroendocrine signaling networks, metabolic regulation associated with the growth hormone axis, and tissue-signaling questions in animal models. These studies aim to improve mechanistic understanding rather than to establish physiological or therapeutic effects through Puritide Research.
Laboratory Safety & Handling (Research Use Only)
Sermorelin is a synthetic, lyophilized research peptide for laboratory investigation only. It should be handled by qualified personnel in controlled environments, in accordance with institutional policies, laboratory safety procedures, and applicable regulations. Laboratories should implement practices that prioritize material integrity, traceability, and reproducibility.
Handling & Storage Guidelines
Follow institutional SOPs, chemical hygiene plans, and approved protocols; wear appropriate PPE (lab coat, gloves, eye protection); and use engineering controls where required. Record lot numbers, storage conditions, and handling activities, and retain Certificates of Analysis and batch documentation to support traceability and audit readiness.
Store material under the conditions specified in product documentation, protected from excessive heat, moisture, and direct light. Maintain consistent conditions throughout the study period and monitor storage records as part of quality assurance. Consistent handling and documentation support reliable, reproducible outcomes.
Certificate of Analysis & Quality Assurance
Each Sermorelin batch ships with a third-party-verified Certificate of Analysis, providing transparent, research-grade quality control. The CoA includes a purity assessment (HPLC / reverse-phase chromatography), mass-spectrometry identity confirmation, and lot number, testing date, and method documentation.
Researchers may request sample CoAs (PDF) ahead of purchase to confirm testing parameters, analytical methods, and batch consistency, and are encouraged to perform independent verification.
Research Use Only
