A Cagrilintide COA (Certificate of Analysis) provides quantitative laboratory verification of peptide purity, molecular identity, and safety parameters for a specific production lot. Validated through Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) and Mass Spectrometry (MS), PX1 Research supplies [Cagrilintide 5mg](/product/cagrilintide-5mg) with third-party analytical documentation confirming ≥98% purity, accurate sequence mass, and low endotoxin levels for preclinical research applications.
A Cagrilintide COA (Certificate of Analysis) provides quantitative laboratory verification of peptide purity, molecular identity, and safety parameters for a specific production lot. Validated through Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) and Mass Spectrometry (MS), PX1 Research supplies [Cagrilintide 5mg](/product/cagrilintide-5mg) with third-party analytical documentation confirming ≥98% purity, accurate sequence mass, and low endotoxin levels for preclinical research applications.
For research institutions evaluating peptide reagents, a lot-specific Certificate of Analysis (COA) serves as the primary document establishing chemical identity and purity. Cagrilintide, a long-acting acylated amylin analogue, requires rigorous analytical characterization due to its complex side-chain modifications. A compliant COA must originate from an independent, ISO 17025-accredited laboratory and detail multiple orthogonal analytical methods.
Primary elements documented on a PX1 Research Cagrilintide COA include the exact lot number, chemical formula, theoretical molecular weight versus observed mass, chemical purity expressed as a percentage of total chromatographic area, residual trifluoroacetate (TFA) content, net peptide content, and bacterial endotoxin measurements. Accessing verified analytical data through our comprehensive research library ensures that laboratory investigators receive reagents that meet stringent experimental standards.
Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) is the gold standard method for determining the chemical purity of synthetic peptides. In HPLC analysis, the sample is passed through a hydrophobic stationary phase under high pressure using a gradient of organic and aqueous mobile phases. Peptide molecules separate based on their hydrophobic interactions, producing distinct chromatographic peaks recorded by ultraviolet (UV) absorbance detectors.
A compliant Cagrilintide 5mg batch must demonstrate a primary peak representing at least 98.0% of the total integrated peak area. Minor secondary peaks correspond to closely related synthetic impurities, such as truncated sequences, deletion peptides, or oxidized species. The COA provides full chromatogram visual output alongside detailed integration tables, allowing researchers to evaluate baseline stability, retention time precision, and total signal resolution.
While RP-HPLC quantifies chemical purity, Mass Spectrometry confirms structural identity by measuring the exact mass-to-charge ratio (m/z) of the peptide. Given that Cagrilintide contains specific amino acid substitutions and a C-terminal lipophilic moiety, verifying mass accuracy is essential to confirm correct synthesis and acylation.
PX1 Research utilizes Electrospray Ionization Mass Spectrometry (ESI-MS) or Matrix-Assisted Laser Desorption/Ionization (MALDI-TOF) mass spectrometry. The resulting spectral data on the COA displays multiply charged ion states that, when deconvoluted, match the theoretical molecular mass within a tight tolerance (typically ±1.0 Da). Combining HPLC peak integration with mass confirmation guarantees that researchers receive the precise molecular entity required for valid in vitro and in vivo studies.
Endotoxins—lipopolysaccharides (LPS) derived from the outer membrane of Gram-negative bacteria—are potent pyrogens capable of skewing cellular assays, inducing non-specific inflammatory responses, and compromising cell culture viability. In preclinical research, utilizing peptides with unquantified endotoxin levels introduces significant experimental noise and invalidates immunological data.
Every production lot of PX1 Research peptides undergoes rigorous bioburden quantification using the Limulus Amebocyte Lysate (LAL) chromogenic assay. Our standards dictate strict limits, maintaining endotoxin levels below 0.05 EU/mg. Detailed criteria and testing protocols are available in our technical overview on endotoxin testing standards, giving researchers confidence in reagent safety for delicate primary cell cultures and microfluidic models.
Evaluating novel metabolic reagents often involves side-by-side comparison with established peptide standards. Cagrilintide represents a non-selective amylin receptor agonist designed for extended half-life in laboratory models. When compared to the short-acting amylin analogue documented in our pramlintide research guide, Cagrilintide demonstrates significantly enhanced receptor occupancy duration due to its acylated domain.
In multi-agonist research designs, investigators frequently co-evaluate Cagrilintide with incretin mimetics such as semaglutide 5mg or dual GLP-1/GIP co-agonists like tirzepatide 10mg. Furthermore, comparative studies measuring multi-pathway energy homeostasis often benchmark these compounds against triple agonists detailed in our retatrutide purity criteria documentation. Understanding the structural purity and COA metrics across each compound class is critical when measuring additive metabolic outcomes in rodent assays.
PX1 Research maintains rigorous quality control frameworks by operating within GMP-compliant, USA-based manufacturing facilities. Synthetic peptides are synthesized using automated solid-phase peptide synthesis (SPPS) platforms, followed by multiple purification steps including preparative HPLC and controlled lyophilization.
Our operational workflow includes complete lot traceability from raw amino acid precursors to final vial seal. All analytical testing is performed by third-party laboratories holding active ISO 17025 accreditation. Orders are processed with same-day dispatch (Monday through Friday) operating out of dual logistics hubs located in California and Arizona, ensuring minimal transit exposure and rapid delivery to domestic research institutions.
Lyophilized peptide cakes require precise handling during solvent addition to maintain structural stability and prevent aggregation. Researchers working with acylated peptides like Cagrilintide must account for hydrophobic interactions during dissolution. Detailed parameters can be referenced in our standardized peptide reconstitution protocols.
For standard in vitro assays, reconstitution is typically performed using sterile bacteriostatic water or sterile phosphate-buffered saline (PBS, pH 7.4). When reconstituting higher concentrations, adding a minor volume of dilute acetic acid or sterile dimethyl sulfoxide (DMSO) may be employed to facilitate complete dissolution before diluting into working assay buffers. Avoid vigorous vortexing; gentle manual swirling or slow inversion prevents shear-stress aggregation.
Proper storage is essential to preserve peptide integrity over extended research timelines. Upon receipt of shipment, intact lyophilized vials of Cagrilintide 5mg should be stored in a sub-zero freezer environment at -20°C to -80°C, protected from ambient light and moisture desiccants.
Once reconstituted into solution, aliquots should be divided into single-use working volumes to minimize freeze-thaw cycles, which induce mechanical peptide cleavage and precipitation. Reconstituted aqueous solutions stored at 2°C to 8°C remain stable for short-term experimental windows (typically 7 to 14 days), whereas frozen aliquots stored at -80°C maintain analytical stability for extended periods.
In preclinical model systems, Cagrilintide operates as a long-acting, non-selective agonist at amylin receptors (AMY1, AMY2, and AMY3) as well as calcitonin receptors (CTR). Native amylin is co-secreted with insulin by pancreatic beta cells and plays a critical role in slowing gastric emptying, inhibiting postprandial glucagon secretion, and promoting central satiety signaling via area postrema activation.
In vitro functional assays indicate that Cagrilintide exhibits high binding affinity across calcitonin receptor core complexes combined with receptor activity-modifying proteins (RAMPs 1, 2, and 3). Preclinical rodent studies demonstrate that sustained target activation leads to marked reductions in cumulative food intake and body weight dynamics when evaluated as a standalone agent or in combination with GLP-1 receptor agonists.
PX1 Research supports university laboratories, biotechnology enterprises, and contract research organizations (CROs) with scale-flexible procurement solutions. Institutional buyers seeking consistent batch-to-batch consistency across extended study protocols can access our full catalogue of high-purity research peptides.
For bulk reagent requirements, dedicated account management, and custom lot-reservation agreements, qualified institutions are encouraged to explore our formal wholesale account program. Every bulk shipment includes lot-matched COA documentation, HPLC chromatograms, and mass spec analytical profiles to maintain protocol compliance.
What information is included on a Cagrilintide COA?
A Cagrilintide Certificate of Analysis (COA) includes lot number, analytical HPLC chromatogram data confirming chemical purity (≥98%), mass spectrometry spectra verifying theoretical molecular weight, net peptide content, appearance assessment, and LAL endotoxin test results.
How is Cagrilintide purity verified by HPLC?
Purity is evaluated via Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC). The main peptide peak is integrated relative to secondary peaks, ensuring that the primary target compound comprises at least 98.0% of total UV absorbance peak area.
What mass spectrometry methods confirm Cagrilintide identity?
Identity is confirmed using Electrospray Ionization Mass Spectrometry (ESI-MS) or MALDI-TOF. The observed molecular mass must match the theoretical mass of Cagrilintide within a strict tolerance of ±1.0 Da.
What are the acceptable endotoxin limits for Cagrilintide research lots?
PX1 Research enforces strict bioburden standards, ensuring that all production lots test below 0.05 EU/mg using standardized Limulus Amebocyte Lysate (LAL) chromogenic assays to prevent non-specific cellular reactions.
How should lyophilized Cagrilintide 5mg be stored upon receipt?
Lyophilized vials should be stored at -20°C to -80°C in a dry environment protected from light. Under these conditions, the lyophilized peptide cake maintains stability for up to 24 months.
Which solvent is recommended for reconstituting Cagrilintide for in vitro assays?
Reconstitution is commonly performed using sterile bacteriostatic water or PBS (pH 7.4). For high-concentration solutions, gentle solubilization in a minor volume of dilute acetic acid prior to buffer dilution may be utilized.
How does Cagrilintide compare to single-target amylin agonists in preclinical studies?
Unlike short-acting native amylin or pramlintide, Cagrilintide incorporates an acylated fatty acid chain that extends plasma half-life and maintains sustained binding across AMY1-3 and CTR receptors in preclinical models.
How can researchers verify lot-specific test results from PX1 Research?
Researchers can download the exact Certificate of Analysis corresponding to their vial lot number directly through the PX1 Research online portal or request third-party documentation via institutional support.
Does PX1 Research offer volume discounts on Cagrilintide for institutional laboratories?
Yes, PX1 Research provides tiered pricing for institutional facilities and bulk purchasers through our wholesale laboratory account portal, ensuring consistent access to validated production lots.
What shipping options are available for domestic US research facilities?
All orders placed before cutoff times ship same-day (Monday through Friday) from our fulfillment centers in California and Arizona using expedited express carrier services.
All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.