GLP-3 RT

This GLP-1 / GIP / glucagon triple receptor agonist reference standard is a synthetic peptide engineered to engage all three class B GPCRs in the incretin and glucagon family simultaneously. Investigators developed triple-agonist constructs as research materials for studies probing integrated metabolic-pathway pharmacology where engagement across GLP-1R, GIPR, and GCGR can be parsed within a single chemical entity. The peer-reviewed literature catalogs this molecule among the most architecturally complex incretin-class research compounds, with comparative work alongside dual-agonists and selective single-receptor analogs. Molecular identity is fixed by sequence and structural confirmation against PubChem CID 171390338, empirical formula C221H342N46O68, with CAS Registry Number 2381089-83-2. Supplied for laboratory characterization, in-vitro receptor-binding work, and in-cell signaling studies only. For research use only; not for human consumption, medical use, or veterinary application.

The molecule is a multi-residue peptide whose sequence integrates GLP-1, GIP, and glucagon determinants to support balanced co-engagement of three class B GPCRs documented in the literature. Backbone-stabilizing aminoisobutyric-acid substitutions confer enzymatic resistance, and a γ-glutamic-acid-linked C20 fatty diacid moiety on a lysine side chain drives high-affinity reversible albumin binding. Pharmacokinetic descriptors documented in published animal-model investigations include multi-day plasma residence under standard parenteral paradigms. Interaction profile in published work spans GLP-1R cAMP activation, GIPR cAMP activation, GCGR cAMP activation, signaling-bias profiling across the three receptors, and integrated metabolic-pathway research in cell-culture and animal-model contexts. All activity descriptors here are framed as documented in published research. Structural confirmation is established by mass spectrometry and HPLC-validated purity on each Certificate of Analysis.

Experimental domains documented in the published literature include triple-receptor binding-affinity studies, signaling-bias profiling across GLP-1R / GIPR / GCGR, integrated cAMP-signaling assays in receptor-co-expressing cell lines, structure-activity investigations dissecting which sequence elements drive engagement at each receptor, comparative work alongside dual-agonists (GLP-1/GIP and GLP-1/glucagon) and selective single-receptor analogs, hepatocyte and β-cell signaling studies, and integrated metabolic-pathway research in animal-model contexts. Investigators have also characterized the construct in albumin-conjugation pharmacokinetic studies and in receptor heteromer-formation paradigms. Use in laboratory research extends to mechanism-elucidation paradigms where the molecule serves as a defined triple-receptor reference for parsing integrated incretin-and-glucagon signaling. The reference standard is supplied for these and equivalent in-vitro and animal-model experimental contexts only, with no associated guidance for human, clinical, or veterinary application.

Each lot is characterized by reverse-phase HPLC for chromatographic purity and by mass spectrometry for molecular-ion confirmation against the C221H342N46O68 empirical formula. Purity is reported as an HPLC-area percentage on the Certificate of Analysis distributed with every lot, alongside the molecular-weight match within instrument tolerance. The acylation site and fatty-diacid stoichiometry are confirmed by tandem mass spectrometry when included in the lot's release specification. Peptide content where applicable is determined by amino-acid analysis or nitrogen-content assay following the analytical method specified on the COA. Residual solvent and water content are reported categorically when these parameters are part of the lot's release specification. The COA records the lot identifier, manufacturing date, and analytical method versions used. Researchers requiring batch-level analytical detail should reference the COA distributed with the supplied material.

For laboratory storage, the lyophilized reference standard should be held at −20°C in its sealed, light-protected container until ready for analytical use. Allow vials to equilibrate to ambient temperature before opening to avoid moisture condensation on the lyophile. Reconstitution for in-vitro experimental use is typically performed in bacteriostatic water or a researcher-selected buffer compatible with the downstream assay; once reconstituted, store the working solution at 2–8°C and characterize stability in the relevant buffer prior to extended storage. Triple-agonist acylated peptide analogs may exhibit aggregation behavior in some buffer systems — assay-specific stability characterization is recommended. Avoid repeated freeze-thaw cycles of reconstituted material — single-use aliquots are preferred for experiments where peptide integrity is assay-critical. These handling parameters do not constitute preparation guidance for human or veterinary application.