When evaluating an Epitalon supplier for analytical or preclinical research, laboratory investigators require stringent verification of sequence integrity, high purity, and complete freedom from bacterial endotoxins. PX1 Research delivers synthesis-verified, high-grade Epitalon supported by lot-specific analytical documentation and domestic cold-chain distribution.
When evaluating an Epitalon supplier for analytical or preclinical research, laboratory investigators require stringent verification of sequence integrity, high purity, and complete freedom from bacterial endotoxins. PX1 Research delivers synthesis-verified, high-grade Epitalon supported by lot-specific analytical documentation and domestic cold-chain distribution.
Selecting a qualified Epitalon supplier requires verifying analytical purity, lot-specific documentation, and domestic synthesis standards. PX1 Research supplies high-purity, synthetic Epitalon (Ala-Glu-Asp-Gly) strictly for laboratory research use, backed by lot-specific third-party HPLC and Mass Spectrometry analyses, endotoxin testing, and same-day shipping from US-based facilities.
For research institutions and academic laboratories, sourcing synthetic peptides demands absolute consistency between batches. Substandard or unverified peptides can introduce unaccounted variables into cellular models, skewing baseline measurements in enzyme kinetics, gene expression assays, and cell longevity studies. A dependable vendor must provide clear chain-of-custody documentation, transparent testing methodologies, and direct access to raw analytical data.
PX1 Research provides laboratory-grade compounds across our complete catalog of research peptides, ensuring that every lot of Epitalon meets defined quantitative specifications before entering distribution. By adhering to strict quality control protocols in ISO 17025 accredited testing environments, we provide research teams with the analytical consistency necessary for reproducible preclinical experimental outcomes.
Epitalon (also known as Epithalon or Epithalone) is a synthetic tetrapeptide consisting of the amino acid sequence L-alanyl-L-alpha-glutamyl-L-alpha-aspartyl-glycine (Ala-Glu-Asp-Gly). It was originally designed as a synthetic analogue of epithalamin, a peptide extract derived from the pineal gland. With a molecular formula of C16H26N4O9 and a molecular weight of approximately 418.4 g/mol, Epitalon is classified as a short-chain peptide bioregulator.
Bioregulator peptides are short amino acid chains capable of interacting with specific regions of chromatin, thereby modulating gene expression at the transcriptional level. Due to its low molecular weight and specific charge profile, Epitalon exhibits favorable solubility in aqueous buffers, making it an ideal candidate for in vitro cell culture assays and controlled animal model administrations.
Because small structural alterations or salt-form variations can impact dissolution rates and biological reactivity, analytical evaluation of raw Epitalon powder must confirm correct primary structure and the absence of residual counter-ions or synthesis reagents. Investigating these structural dynamics is part of a broader field covered within our bioregulator peptides overview.
The primary focus of empirical research surrounding Epitalon centers on its role in telomere biology and cellular senescence. Telomeres—repetitive nucleotide sequences at the ends of eukaryotic chromosomes—protect genomic DNA from degradation during mitotic division. Telomere shortening serves as a hallmark of cellular aging in somatic cell cultures.
In vitro data indicate that Epitalon can induce the expression of the catalytic subunit of telomerase (TERT), the enzyme responsible for synthesizing telomeric repeat sequences. In rodent somatic cell cultures and human fibroblast models, exposure to Epitalon has been observed to promote telomere elongation, overcome the Hayflick limit, and extend cellular replicative capacity without inducing transformed phenotypes.
Preclinical studies suggest that Epitalon interacts with histones and promoter regions of DNA, modifying chromatin accessibility. By facilitating promoter binding for telomerase-associated genes, Epitalon provides a model for investigating targeted epigenetic regulation in senescence research. Additional mechanistic studies can be explored in the PX1 Research Library.
In addition to telomere dynamics, Epitalon is widely studied for its functional relationship with the pineal gland and circadian neuroendocrine pathways. The pineal gland regulates systemic circadian rhythms through the pulsed synthesis of melatonin, a pathway that frequently undergoes attenuation in aging rodent models.
In animal studies involving aged murine and non-human primate models, administration of Epitalon was associated with a restoration of nocturnal melatonin secretion patterns. In vitro analysis of pinealocytes suggests that Epitalon modulates transcription factors involved in the activity of serotonin N-acetyltransferase (AANAT), a rate-limiting enzyme in melatonin synthesis.
Furthermore, researchers utilize Epitalon to examine neuroendocrine regulation under disrupted light-dark cycles. By evaluating antioxidant status, lipid peroxidation markers, and hormonal outputs in research models exposed to continuous illumination, investigators leverage Epitalon to dissect environmental stress responses at the organelle and cellular levels.
Evaluating an Epitalon supplier requires looking beyond simple claims of purity. Academic and industrial laboratories must demand robust, lot-specific Certificate of Analysis (COA) documents that feature verified chromatographic and mass spectroscopic data.
High-Performance Liquid Chromatography (HPLC) is the primary technique used to determine chemical purity. A acceptable RP-HPLC analysis for research-grade Epitalon should demonstrate a distinct single peak with an optical purity profile exceeding 98.0%. Minor peaks represent potential synthesis byproducts, such as truncated sequences or deletion peptides, which must be quantified and capped at strict minimal thresholds.
Mass Spectrometry (MS)—typically Electrospray Ionization (ESI-MS) or Matrix-Assisted Laser Desorption/Ionization (MALDI-TOF)—is concurrently deployed to verify correct molecular weight. The observed mass-to-charge ratio (m/z) must match the theoretical molecular weight of 418.4 Da within tight instrument tolerances. To learn more about standard analytical criteria, review our guide on peptide purity testing via HPLC and MS.
For cell culture assays and in vivo rodent models, peptide purity alone is insufficient; endotoxin control is equally critical. Gram-negative bacterial lipopolysaccharides (LPS) can contaminate synthetic peptide preparations during processing, purification, or lyophilization.
In vitro assays measuring inflammatory cytokine release, gene transcription, or cellular proliferation are highly sensitive to background endotoxin. Uncontrolled LPS levels trigger Toll-like receptor 4 (TLR4) signaling pathways, creating false-positive responses that undermine experimental validity.
PX1 ResearchSubjects every batch of lyophilized Epitalon to rigorous Limulus Amebocyte Lysate (LAL) testing, verifying that endotoxin levels remain strictly under published laboratory limits (<0.05 EU/mg). This stringent screening guarantees that observed cellular responses are attributable exclusively to Epitalon rather than ambient bacterial contaminants.
Proper handling and storage are critical to maintaining the chemical stability of synthetic Epitalon. Epitalon is typically supplied as a sterile, lyophilized (freeze-dried) powder sealed under inert gas to prevent oxidative degradation.
For long-term storage, unopened vials of lyophilized Epitalon should be maintained at -20°C or -80°C, protected from light and moisture exposure. Prior to reconstitution, vials should be allowed to equilibrate to room temperature inside a desiccator to prevent atmospheric condensation from entering the container.
Reconstitution should be executed using sterile, research-grade solvents such as Bacteriostatic Water, Sterile Water for Injection, or Phosphate-Buffered Saline (PBS, pH 7.4). For step-by-step handling parameters and stability timelines, consult our detailed resource on lyophilized peptide storage protocols. Post-reconstitution, liquid aliquots should be frozen at -20°C to prevent freeze-thaw degradation cycles.
When designing cellular models or comparative physiological studies, researchers frequently compare Epitalon against other well-studied bioregulators and longevity-associated research peptides. Understanding structural and functional distinctions allows scientists to select the appropriate compound for specific signaling pathways.
For instance, while Epitalon primarily targets chromatin accessibility and telomerase expression, Thymalin—another short pineal-thymic derived bioregulator—is primarily investigated for immunomodulatory signal cascades and T-cell differentiation assays. Similarly, the tripeptide GHK-Cu operates through copper-binding mechanisms that upregulate tissue remodeling and DNA repair pathways, contrasting with Epitalon's direct epigenetic telomerase activation.
Additionally, non-bioregulator senolytics such as FOXO4-DRI function via targeted induction of apoptosis in senescent cells by disrupting p53-FOXO4 binding. Epitalon, by contrast, acts upstream to maintain telomeric length and prevent cells from entering a senescent state initially. Evaluating these distinct mechanistic pathways side by side assists laboratories in constructing comprehensive multi-target research models.
Procurement bottlenecks and inconsistent international supply chains present significant risks to ongoing long-term preclinical studies. Quality variations between imported peptide batches can disrupt months of experimental work.
PX1 Research eliminates supply chain volatility by managing domestic synthesis, processing, and analytical testing within state-of-the-art, ISO-certified US facilities. Every lot undergoes independent analytical validation prior to release, ensuring that institutional buyers receive fully verified material.
We offer flexible fulfillment options for both small-scale screening projects and institutional laboratory contracts through our dedicated wholesale procurement program. Combined with same-day dispatch from our California and Arizona logistics hubs, PX1 Research provides the reliability required by modern research enterprises.
What is Epitalon studied for in preclinical research?
In preclinical and in vitro research, Epitalon is primarily studied for its role in telomerase activation, telomere length maintenance, cellular senescence attenuation, chromatin remodeling, and circadian rhythm regulation via pineal gland modulation.
How is the purity of research-grade Epitalon verified?
Epitalon purity is verified using Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) to assess chemical purity (target ≥98%) and Mass Spectrometry (ESI-MS or MALDI-TOF) to confirm precise molecular mass (418.4 Da).
What endotoxin standards does PX1 Research apply to Epitalon?
PX1 Research subjects every lot of Epitalon to Limulus Amebocyte Lysate (LAL) testing to ensure endotoxin levels remain below strictly controlled laboratory thresholds (<0.05 EU/mg), preventing confounding inflammatory responses in cell culture models.
What solvent should be used for Epitalon reconstitution in a lab?
Epitalon easily dissolves in aqueous media. Common laboratory reconstituting solvents include sterile research-grade water, Bacteriostatic Water, or sterile Phosphate-Buffered Saline (PBS, pH 7.4), depending on assay requirements.
How should reconstituted Epitalon be stored?
Once reconstituted, liquid Epitalon should be divided into single-use aliquots to avoid repeated freeze-thaw cycles and stored at -20°C or -80°C. Aliquots stored at 4°C should typically be used within short experimental windows.
Where is PX1 Research Epitalon manufactured and shipped from?
PX1 Research Epitalon is synthesized and analytically tested in the USA in ISO 17025 accredited facility environments. Orders ship directly from our centralized distribution hubs in California and Arizona.
Is Epitalon intended for human consumption or clinical use?
No. Epitalon supplied by PX1 Research is strictly designated for laboratory in vitro and preclinical research use only. It is not intended for human or animal medical, clinical, diagnostic, or therapeutic application.
Can bulk research quantities of Epitalon be sourced for ongoing studies?
Yes, PX1 Research offers institutional pricing and bulk lot procurement through our wholesale program, complete with lot-matched COAs for institutional consistency across multi-phase projects.
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.