An authentic Epithalon COA (Certificate of Analysis) provides independent, lot-specific verification of sequence purity, molecular mass, and chemical identity for high-precision laboratory research. PX1 Research validates every production batch of synthetic Epithalon through accredited third-party ISO 17025 testing facilities, utilizing reverse-phase high-performance liquid chromatography (RP-HPLC) and mass spectrometry (MS) to confirm >99% purity and low endotoxin thresholds.
An authentic Epithalon COA (Certificate of Analysis) provides independent, lot-specific verification of sequence purity, molecular mass, and chemical identity for high-precision laboratory research. PX1 Research validates every production batch of synthetic Epithalon through accredited third-party ISO 17025 testing facilities, utilizing reverse-phase high-performance liquid chromatography (RP-HPLC) and mass spectrometry (MS) to confirm >99% purity and low endotoxin thresholds.
In peptide synthesis and cellular biochemistry, verifiable batch quality is essential to maintaining experimental reproducibility. An Epithalon COA serves as the primary technical dossier confirming that a specific lot of the synthetic tetrapeptide (L-alanyl-L-alpha-glutamyl-L-alpha-aspartyl-glycine, C14H22N4O9) meets strict chemical specifications before entering laboratory workflows.
To ensure analytical integrity, researchers evaluating synthetic bioregulators must review raw chromatograms and mass spectra rather than relying solely on manufacturer assertions. High-resolution evaluation through peptide purity HPLC guide standards demonstrates that the sample is free from truncated amino acid sequences, deamidated species, and residual protecting groups that could confound in vitro cell culture research.
A comprehensive Epithalon COA published by an independent laboratory contains several critical testing parameters. Each metric provides specific data regarding the chemical state, identity, and cleanliness of the lyophilized powder:
1. Reverse-Phase HPLC Purity: Measures the relative area under the curve (AUC) for the main Epithalon peak compared to organic impurities. A research-grade sample typically exhibits >99.0% purity at UV wavelengths of 214 nm and 220 nm. 2. Electrospray Ionization Mass Spectrometry (ESI-MS): Confirms exact molecular weight (monoisotopic mass of ~390.35 Da), verifying sequence identity without mass shifts from unexpected counterions or adducts. 3. Endotoxin Quantitation (LAL Assay): Determines bacterial lipopolysaccharide (LPS) levels using the Limulus Amebocyte Lysate assay, ensuring suitability for sensitive cellular models. 4. Net Peptide Content & Water Determination: Assesses residual moisture via Karl Fischer titration and elemental nitrogen analysis to accurately calculate molar concentrations during buffer preparation. 5. Acetate / Counterion Content: Quantifies residual trifluoroacetate (TFA) or acetate salts remaining from cleavage and purification procedures.
Researchers seeking to verify specific batch profiles can cross-reference batch numbers directly on our Epithalon product page to inspect full-resolution third-party documentation.
Epithalon (also known as Epitalon or Epithalone) belongs to the bioregulator class of short peptide sequences originally isolated from pineal gland extracts. Preclinical studies suggest that short peptide bioregulators act via epigenetic mechanisms, interacting directly with specific chromatin regions to modulate gene expression.
In primary cell lines and animal models, Epithalon has been studied for its capacity to induce telomerase activity, assist in telomere maintenance, and alter expression patterns associated with cellular senescence. In vitro research models also investigate its role in pineal melatonin production pathways and circadian rhythm modulation. Because subtle structural variations can alter peptide-chromatin interactions, obtaining a certified pure compound via a verified Epithalon COA is vital for objective scientific observation.
Epithalon is frequently evaluated alongside other synthetic short-chain peptides designed to model tissue-specific or system-wide cellular signaling. Understanding the analytical and functional differences between these compounds allows laboratories to construct accurate experimental controls.
For instance, while Epithalon targets nuclear chromatin and telomerase activation pathways, Pinealon is a synthetic tripeptide (Glu-Asp-Arg) evaluated primarily in neuronal cell cultures for neuroprotective and oxidative stress assays. Researchers examining a pinealon certificate of analysis will observe a distinct molecular weight (~418.38 Da) and unique HPLC retention times. Similarly, Thymalin represents a thymic-derived peptide complex studied for immunomodulatory pathways, whereas FOXO4-DRI targets senescent cell apoptosis via p53 interaction. Securing verified documentation across all bioregulator peptides overview targets ensures target specificity across comparative research projects.
PX1 Research enforces strict quality control standards for every research compound distributed to scientific institutions. All products are USA-manufactured in GMP-compliant facilities and undergo independent testing at accredited ISO 17025 laboratories to ensure uncompromised data integrity.
Every batch of Epithalon is assigned a unique lot number tracked from initial solid-phase peptide synthesis (SPPS) through final freeze-drying. Our testing protocol mandates that no batch is released without a verified third-party COA demonstrating compliant HPLC chromatograms, mass spectra, and low-endotoxin thresholds. Orders are fulfilled with same-day shipping (Monday through Friday) directly from our distribution hubs in California and Arizona to support fast-paced research schedules.
Bacterial endotoxins (lipopolysaccharides) are dangerous contaminants in cell culture studies. Even trace amounts of endotoxin can trigger unwanted inflammatory pathways, activate Toll-like receptor 4 (TLR4), and distort cellular responses in senescence or gene expression assays.
According to USP <85> standards, research reagents used in cell culture models should maintain minimal endotoxin levels. PX1 Research tests every peptide lot using chromogenic or gel-clot LAL testing, ensuring endotoxin levels remain below strictly defined laboratory limits (<0.05 EU/mg). For further technical background on endotoxin quantification methods, visit our guide on endotoxin testing standards.
Epithalon is supplied as a sterile, lyophilized white powder to maximize long-term peptide stability. Proper handling under aseptic laboratory conditions prevents hydrolysis, oxidation, and aggregation prior to assay execution.
Reconstitution Procedures: 1. Allow the sealed vial to equilibrate to room temperature before opening to minimize condensation. 2. Reconstitute using sterile bacteriostatic water, sterile normal saline, or phosphate-buffered saline (PBS, pH 7.4) depending on downstream assay requirements. 3. Direct the solvent along the inner glass wall of the vial rather than shooting directly onto the peptide cake. 4. Gently swirl the vial until completely dissolved; do not vortex vigorously, as physical agitation can cause mechanical shear stress or peptide denaturing.
Storage & Stability: - Lyophilized Powder: Store at -20°C for up to 24 months, or at -80°C for extended archival storage. - Reconstituted Solution: Store aliquots at -20°C or -80°C. Avoid repeated freeze-thaw cycles, which accelerate physical degradation. Working aliquots stored at 4°C should be utilized within 7 to 14 days.
Academic laboratories, biotechnology firms, and institutional research facilities requiring large-scale peptide quantities require supply chain stability and batch uniformity. Discrepancies between peptide lots can invalidate months of longitudinal data in extended tissue culture models.
PX1 Research offers standardized bulk purchasing and institutional account management through our wholesale lab account portal. Institutional buyers gain direct access to complete batch records, raw chromatography files, and dedicated technical support to streamline procurement for high-throughput screening programs across our entire catalog of all research peptides.
What specific testing methods validate an epithalon coa?
An authentic epithalon coa is validated using Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) to measure chemical purity percentage, Electrospray Ionization Mass Spectrometry (ESI-MS) to confirm exact molecular mass, and Limulus Amebocyte Lysate (LAL) testing to quantify endotoxin levels.
Where can researchers inspect a pinealon certificate of analysis alongside Epithalon?
Researchers can inspect third-party documentation directly on the PX1 Research product pages. The pinealon certificate of analysis is published alongside the Epithalon COA on their respective product listing pages to provide full lot transparency prior to laboratory purchase.
What is the target HPLC purity percentage on a high-grade Epithalon COA?
High-grade research peptides should demonstrate a purity of >98.0%, with premium analytical standards reaching >99.0% by HPLC peak area integration at 214 nm.
How does mass spectrometry verify the identity of the Epithalon tetrapeptide?
Mass spectrometry measures the mass-to-charge ratio (m/z) of the ionized compound. For Epithalon, it confirms the observed molecular weight matches the theoretical target (~390.35 Da), ruling out incorrect amino acid sequences or heavy chemical impurities.
Why is endotoxin testing critical for in vitro Epithalon research?
Endotoxins (lipopolysaccharides) alter cellular signaling, stimulate cytokine release, and induce non-specific inflammatory pathways in cell cultures. Ensuring endotoxins are below <0.05 EU/mg prevents experimental distortion in delicate gene expression assays.
How should Epithalon lyophilisate be reconstituted for laboratory assays?
Reconstitute Epithalon under a laminar flow hood using sterile bacteriostatic water or PBS (pH 7.4). Gently swirl the vial to dissolve the cake without vortexing, then aliquot into single-use volumes.
What storage conditions prevent degradation of Epithalon bioregulator samples?
Lyophilized powder should be stored long-term at -20°C or -80°C. Once reconstituted, solution aliquots must be frozen to avoid repeated freeze-thaw cycles, which break down delicate peptide bonds.
How does Epithalon compare to other synthetic bioregulators in telomere research?
Epithalon (Ala-Glu-Asp-Gly) specifically targets telomerase expression and pineal chromatin pathways in preclinical models, whereas tripeptides like Pinealon focus on neuronal oxidative stress pathways, and Thymalin models immune system modulation.
Does PX1 Research provide lot-specific COAs with every order?
Yes. Every batch distributed by PX1 Research includes a dedicated, lot-specific COA generated by an independent third-party ISO 17025 accredited laboratory.
What are the fulfillment and shipping timelines for PX1 Research compounds?
PX1 Research offers same-day shipping for orders placed Monday through Friday. Orders ship directly from our state-of-the-art dispatch facilities located in California and Arizona.
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.