99% PURITY
GLP-1 Peptides
Retatrutide Pen
MW: 4875.42 g/molCAS: 2381089-83-2
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High-purity dual and triple incretin receptor agonists for advanced metabolic and endocrine research.
GLP-1 Peptides
GLP-1 Peptides
GLP-1 Peptides
GLP-1 Peptides
The incretin axis represents one of the most intensively studied areas in contemporary metabolic biology. Glucagon-like peptide-1 (GLP-1) is an endogenous hormone secreted by L-cells of the distal small intestine in response to nutrient ingestion, acting through a widely distributed receptor system that spans the pancreas, central nervous system, gastrointestinal tract, and cardiovascular tissues. Researchers investigating this pathway have access to a new generation of synthetic agonists — including dual GLP-1/GIP and triple GLP-1/GIP/glucagon receptor agonists — that allow precise dissection of receptor subtype contributions to glucose homeostasis, energy expenditure, and lipid metabolism.
Compounds such as Tirzepatide, Semaglutide, and Retatrutide each carry distinct receptor binding profiles and pharmacokinetic properties, making them valuable reference tools for in vitro receptor activation studies, signalling pathway mapping (including cAMP/PKA and PI3K/Akt cascades), and comparative efficacy models. Retatrutide's additional glucagon receptor agonism introduces a further dimension, enabling researchers to model the interplay between counter-regulatory hormones and incretin signalling. All compounds in this category are supplied as lyophilised peptides of ≥99% purity, verified by HPLC and mass spectrometry, for research use only.
Understanding Certificates of Analysis (COA) for Research Peptides
6 min readTirzepatide: Research Applications and Scientific Overview
7 min readGLP-1 Peptides: A Research Overview
8 min readUnderstanding HPLC and Mass Spectrometry Results for Peptides
7 min readSemaglutide: Research Applications and Scientific Overview
7 min readRetatrutide vs Tirzepatide: A Research Comparison
7 min readDual agonists such as Tirzepatide engage both the GLP-1 receptor (GLP-1R) and the glucose-dependent insulinotropic polypeptide receptor (GIPR). Because GIPR is expressed in adipose tissue, the central nervous system, and bone — in addition to the pancreatic beta cell — co-agonism enables researchers to study additive or synergistic effects on downstream signalling that cannot be observed with GLP-1R-selective tools alone. This makes dual agonists particularly useful for dissecting receptor-specific contributions in complex metabolic models.
Retatrutide adds glucagon receptor (GCGR) agonism to the GLP-1R/GIPR profile. Glucagon is classically associated with hepatic glucose output and lipolysis, so triple agonism creates a tool for studying how opposing hormone signals are integrated at the level of hepatocytes and adipocytes. Research groups use this to model energy flux under conditions where all three incretin-related receptors are simultaneously activated, providing insights into the inter-organ crosstalk that single or dual agonists cannot fully replicate.
Lyophilised GLP-1 receptor agonists are typically reconstituted in sterile bacteriostatic water or a dilute acetic acid solution (0.1–1% v/v) to ensure solubility, then further diluted in the relevant assay buffer. Working stock concentrations and storage conditions (generally −20 °C, protected from freeze-thaw cycles) should be optimised for each compound's specific stability profile. Researchers should consult the accompanying Certificate of Analysis and published literature for compound-specific guidance.
Yes. The peptides supplied in this category are routinely used in cell-based models expressing recombinant GLP-1R, GIPR, or GCGR — including HEK293 and CHO overexpression systems — for cAMP accumulation assays, radioligand competition binding, and receptor internalisation studies. Their high purity (≥99% by HPLC) and defined molecular weight allow accurate molar dosing, which is critical for generating reproducible concentration-response curves in pharmacological research.
All products sold by Neovia Peptides are strictly for in-vitro research and laboratory use only. Not intended for human or veterinary use, food additives, drugs, or cosmetics. By purchasing from this website, you agree that you understand and accept these terms.