Buy Original Epitalon for Laboratory Research

Direct Guidance: Sourcing Authentic Epitalon (Ala-Glu-Asp-Gly)

To buy original Epitalon (synthetic tetrapeptide Ala-Glu-Asp-Gly), research institutions must verify sequence fidelity via Electrospray Ionization Mass Spectrometry (ESI-MS) and demand purity exceeding 98% via Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC). Authentic Epitalon is a short synthetic pineal peptide bioregulator evaluated in preclinical models for telomerase activation, chromatin organization, and circadian rhythm maintenance.

Because small peptide chains are prone to truncated synthesis byproducts or salt impurities during solid-phase peptide synthesis (SPPS), acquiring original Epitalon demands lot-specific Certificate of Analysis (COA) verification from an independent ISO 17025 accredited laboratory. PX1 Research supplies high-purity research peptides manufactured under strict quality standards to ensure consistency across experimental trials.

Molecular Structure and Chemical Profile of Epitalon

Epitalon (CAS Registry Number: 307297-39-8) is a synthetic tetrapeptide consisting of the amino acid sequence L-alanyl-L-alpha-glutamyl-L-alpha-aspartyl-glycine (H-Ala-Glu-Asp-Gly-OH). Its exact molecular formula is C16H26N4O9, yielding a monoisotopic molecular weight of 418.39 g/mol. Epitalon was engineered as a synthetic analogue of epithalamin, a crude pineal gland extract, designed to isolate the specific bioactivity responsible for nuclear interaction.

Due to its ultra-short peptide backbone, Epitalon exhibits high solubility in aqueous buffer systems and distinct conformational stability compared to larger polypeptide structures. In laboratory environments, verifying the molecular mass via high-resolution ESI-MS is critical because incorrect truncation sequences (such as Ala-Glu-Asp or Glu-Asp-Gly) can lack the necessary receptor binding affinity or epigenetic interaction profile observed in pineal bioregulator research.

Preclinical Mechanisms: Telomerase Activation and Telomere Dynamics

The primary locus of Epitalon research centers on its interaction with the catalytic subunit of human telomerase reverse transcriptase (hTERT). In vitro assays using human somatic cell lines indicate that Epitalon exposure induces the expression of the hTERT gene, leading to transient activation of the telomerase enzyme complex. Preclinical data suggest that this enzyme activation facilitates the addition of TTAGGG hexanucleotide repeats to the 3' end of chromosomal DNA, preserving telomere length during successive mitotic cycles.

In cell culture models evaluating cellular senescence, treated fibroblasts demonstrated extended proliferative life spans without inducing transformational or oncogenic alterations. In vitro studies demonstrate that Epitalon induces chromatin decondensation by interacting directly with promoter regions of specific DNA segments, making key loci accessible for transcriptional machinery. Researchers studying genomic stability utilize Epitalon to investigate molecular signaling pathways involved in cellular aging and replication caps.

Circadian Regulation and Neuroendocrine Research

Beyond chromosomal architecture, Epitalon is extensively studied for its bioregulatory influence on the neuroendocrine axis, specifically within the pineal gland-hypothalamic network. In animal models of accelerated aging, administration of Epitalon restored nocturnal melatonin secretion patterns, demonstrating a stabilizing effect on circadian rhythm amplitude. These findings indicate that the tetrapeptide modulates neuroendocrine gene expression, mitigating age-associated dampening of pineal gland output.

Preclinical studies suggest that Epitalon modulates the synthesis of pineal peptides and downstream signaling cascades, altering antioxidant enzyme activity—including superoxide dismutase (SOD) and glutathione peroxidase (GPx)—in rodent tissue homogenates. Researchers evaluating circadian disruption, sleep-wake architecture, and oxidative stress pathways utilize Epitalon to dissect the cross-talk between pineal peptides and peripheral cellular homeostasis. Further details on pineal signaling pathways are documented in our telomerase research overview.

Comparative Analysis: Epitalon vs. Other Bioregulators & Cellular Compounds

Understanding how Epitalon compares to other short-chain peptides and longevity-focused research compounds helps laboratories structure targeted comparative protocols. Epitalon belongs to the class of short peptide bioregulators, but its cellular target and biological mechanism differ distinctly from immunomodulatory or senolytic peptides.

For example, while Epitalon focuses primarily on hTERT expression and pineal gene modulation, Thymalin functions as a thymic peptide bioregulator primarily investigated for T-cell differentiation and immune system modulation. Conversely, targeted senolytic compounds such as FoxO4-DRI act by selectively inducing apoptosis in senescent cells via p53-binding interference, rather than preserving telomere caps in active cell populations. Additionally, mitochondrial peptides like MOTS-c regulate metabolic homeostasis and AMPK phosphorylation rather than direct nuclear chromatin unwinding. Selecting between these compounds depends on whether the investigator is targeting nuclear gene expression, immune signaling, senescent clearance, or metabolic regulation.

Analytical Standards: How to Verify Authentic Epitalon

To ensure reproducible experimental outcomes, research teams must evaluate potential suppliers against rigorous analytical metrics. Counterfeit or low-grade Epitalon frequently suffers from residual trifluoroacetic acid (TFA) contamination, heavy metal residues, or baseline synthesis errors that alter biological activity in vitro.

When purchasing Epitalon, request lot-specific analytical documentation showing:

1. Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC): Ensures purity levels ≥ 98.0%, displaying a sharp, symmetrical peak without co-eluting synthesis impurities or sequence truncations.

2. Electrospray Ionization Mass Spectrometry (ESI-MS): Confirms the exact target molecular weight (418.39 g/mol) to verify structural identity.

3. LAL Endotoxin Testing: Measures bacterial endotoxin levels. For cellular assays and animal studies, endotoxin levels must remain strictly below 0.01 EU/mg to avoid inflammatory background noise.

4. Moisture and Acetate/TFA Content: Quantifies residual salts and solvents from the purification process, ensuring true net peptide content.

Laboratory Handling, Reconstitution, and Assay Preparation

Epitalon is supplied as a lyophilized (freeze-dried) sterile powder to ensure long-term physical and chemical stability. For laboratory reconstitution, strict aseptic technique within a certified laminar flow hood is recommended to maintain sample integrity.

Reconstitution should be performed using sterile, non-pyrogenic Bacteriostatic Water (0.9% benzyl alcohol) or Sterile 0.9% Sodium Chloride, depending on the requirements of the downstream assay. Gently inject the diluent along the glass vial wall, allowing the liquid to run down into the powder cake. Avoid aggressive vortexing or mechanical agitation, which can induce physical shear stress or foaming; instead, swirl the vial gently until complete dissolution is achieved. Detailed guidelines on liquid handling and molar concentration calculations are available in our peptide reconstitution guide.

Storage Parameters and Degradation Protocols

Lyophilized Epitalon exhibits strong structural stability when stored at controlled temperatures. Upon receipt, lyophilized vials should be stored at -20°C for short-to-medium duration, or at -80°C for long-term archiving, protected from ambient light and atmospheric humidity.

Once reconstituted into solution, Epitalon should be stored at 2°C to 8°C and used within a short timeframe (typically 14 to 28 days depending on the reconstitution medium used). If long-term storage of dissolved peptide is required, aliquot the reconstituted stock solution into single-use, low-binding polypropylene microcentrifuge tubes and freeze immediately at -80°C. Repeated freeze-thaw cycles must be strictly avoided, as thermal cycling causes peptide cleavage and aggregation that invalidates quantitative assay data.

Quality Assurance at PX1 Research: USA Manufacturing & ISO Verification

PX1 Research is dedicated to supporting the scientific community by providing reference-grade research chemicals produced under stringent quality control conditions. Our Epitalon synthesis protocols adhere to strict Good Manufacturing Practice (GMP) standards within USA-based production facilities.

Every batch of Epitalon manufactured for PX1 Research undergoes third-party verification by independent, ISO 17025 accredited analytical laboratories. We perform full-spectrum testing including RP-HPLC, ESI-MS, and Chromogenic LAL Endotoxin assays per lot. We provide transparent, downloadable COAs directly traceable to the lot number on your vial. Furthermore, orders ship same-day (Monday through Friday) directly from our dual distribution centers located in California and Arizona to minimize transit transit times and environmental degradation.

Institutional Procurement and Wholesale Research Supplies

Academic institutions, biotechnology laboratories, and contract research organizations (CROs) requiring large-scale or multi-lot studies can access custom fulfillment services through PX1 Research. We provide bulk quantity allocations, lot reservation services for longitudinal studies, and customized packaging configurations.

To review structural specifications, request formal quotations, or set up an institutional purchasing account, visit our wholesale portal or browse our expanded research library hub to access protocol documentation and comparative technical sheets.