Epithalon 10mg — Vial Spec, Reconstitution Math & COA

Overview of the Epithalon 10mg Format in Preclinical Research

The 10mg vial format of Epithalon represents a standardized mass commonly selected by institutional laboratories conducting high-concentration cell culture studies or multi-animal rodent trials. Epithalon is a synthetic short-chain peptide (Ala-Glu-Asp-Gly) modeled after epithalamin, a natural peptide extract isolated from the pineal gland. In cell-free and cell-based experimental designs, researchers require exact quantitative control over peptide mass to ensure reproducibility across experimental blocks.

Choosing a 10mg fill mass balances volumetric convenience with chemical stability. Smaller vial sizes may require frequent reconstitution cycles, increasing the risk of batch-to-batch operational variance, whereas excessively large fill sizes can subject reconstituted solutions to repeated degradation over long experimentation timelines. For research facilities maintaining standardized assay plates, a 10mg unit offers optimal aliquot flexibility without compromising chemical integrity.

Chemical Profile and Molecular Structure of Epithalon

Epithalon consists of four amino acids arranged in the sequence L-alanyl-L-alpha-glutamyl-L-alpha-aspartyl-glycine (H-Ala-Glu-Asp-Gly-OH). It possesses a molecular formula of C14H22N4O9 and a calculated molecular weight of approximately 390.35 g/mol. Due to its hydrophilic amino acid composition, particularly the acidic residues glutamic acid and aspartic acid, Epithalon demonstrates excellent solubility characteristics in aqueous laboratory buffers.

In synthetic preparations manufactured via solid-phase peptide synthesis (SPPS), the compound is isolated as a white or off-white lyophilized cake. When evaluating catalog specifications via the all-peptides directory, verifying the net peptide content versus counter-ion salt weight (such as acetate salt) is essential for accurate gravimetric calculations in physical chemistry research.

Reconstitution Mathematics for Epithalon 10mg Vials

Accurate concentration mapping is vital prior to initiating any pipetting sequence. To reconstitute a 10mg vial of Epithalon, researchers add a measured volume of sterile laboratory diluent—typically Bacteriostatic Water (0.9% benzyl alcohol) for multi-use working vials or sterile 0.9% Sodium Chloride / Phosphate-Buffered Saline (PBS) for immediate cell culture applications.

The final concentration ($C$) of the solution is calculated using the formula $C = \frac{m}{V}$, where $m$ is the total peptide mass (10mg) and $V$ is the added volume of diluent. Standard concentration conversions for the 10mg vial are mapped as follows:

1. Reconstitution with 1.0 mL Diluent: Yields a final concentration of 10.0 mg/mL (10,000 µg/mL). In this configuration, each 0.1 mL (100 µL) drawn contains exactly 1.0 mg (1,000 µg) of active peptide sequence. 2. Reconstitution with 2.0 mL Diluent: Yields a final concentration of 5.0 mg/mL (5,000 µg/mL). In this configuration, each 0.1 mL (100 µL) contains exactly 0.5 mg (500 µg) of Epithalon. 3. Reconstitution with 3.0 mL Diluent: Yields a final concentration of 3.33 mg/mL (3,333 µg/mL). In this configuration, each 0.1 mL (100 µL) contains approximately 0.333 mg (333.3 µg) of Epithalon.

For complex dilutions or micro-molar calculations in cell culture setups, investigators can utilize the PX1 interactive reconstitution-calculator to quickly verify concentration targets and liquid delivery volumes.

Laboratory Reconstitution Protocol & Handling Procedures

To ensure complete dissolution without inducing mechanical shear stress on the peptide backbone, technicians should adhere to standardized aseptic techniques during reconstitution:

1. Allow the lyophilized 10mg Epithalon vial to equilibrate to room temperature (20°C to 25°C) inside a laminar flow hood before removing the plastic flip-off cap. This step prevents condensation from introducing extraneous moisture into the dry cake. 2. Disinfect the rubber septum using a 70% isopropyl alcohol swab. 3. Using a sterile syringe, draw the exact volume of chosen diluent (1.0 mL, 2.0 mL, or 3.0 mL). 4. Direct the diluent needle stream along the inner glass wall of the vial rather than spraying directly onto the lyophilized powder. 5. Gently swirl the vial in a circular motion until the lyophilized cake is fully dissolved. Do not vortex vigorously, as rapid mechanical agitation can cause foam formation and potential surface denaturation.

Inspect the solution visually. Reconstituted Epithalon should form a completely clear, colorless solution free of visible particulate matter.

Aliquot Planning and Sub-Sampling Strategies

Repeated freeze-thaw cycles can degrade peptide bonds and compromise experimental reproducibility. For long-term studies utilizing a 10mg vial, laboratories should prepare single-use or weekly-use aliquots immediately following initial reconstitution.

Using sterile microcentrifuge tubes (e.g., polypropylene low-binding tubes), divide the stock solution into desired volumetric units (such as 100 µL or 200 µL aliquots). Label each aliquot tube with the compound name, lot number, final concentration, and date of reconstitution before transferring to sub-zero storage. This protocol minimizes exposure to ambient atmospheric fluctuations and eliminates repetitive thermal stress.

Storage Conditions: Lyophilized Powder vs. Reconstituted Solution

Thermal management dictates the chemical shelf-life of Epithalon. Lyophilized Epithalon 10mg vials are stable at ambient temperatures during short-term transit; however, upon receipt at the research facility, long-term storage requirements must be observed:

• Unreconstituted (Lyophilized) Vials: Store at -20°C for up to 24 months. For extended multi-year preservation, store at -80°C in a desiccated environment. • Reconstituted Liquid Stock: Store at 4°C (refrigerated) for short-term use not exceeding 14 to 28 days (when reconstituted with Bacteriostatic Water). For extended storage up to 3 to 6 months, freeze aliquots at -20°C or -80°C.

Avoid standard frost-free freezers for aliquot preservation, as their automated temperature cycling causes localized micro-thawing events that deteriorate small molecular weight peptides over time.

Analytical Verification: Lot-Matched COA and Quality Control

High-purity reagents are required to prevent baseline errors in cell viability, gene expression, or enzyme activity assays. Every fill batch of Epithalon supplied by PX1 Research undergoes strict quality verification protocols.

Investigators can inspect the lot-matched documentation via the dedicated coa portal. Key analytical metrics verified prior to release include:

1. High-Performance Liquid Chromatography (HPLC): Confirms chemical purity. PX1 Research mandates a minimum purity threshold of ≥98.0% for all catalog lots. 2. Mass Spectrometry (MS): Confirms the exact identity of the peptide by verifying the observed molecular mass against the theoretical molecular weight of 390.35 Da. 3. Endotoxin Testing (LAL Assay): Ensures bacterial endotoxin levels remain below strict laboratory research thresholds (<0.5 EU/mg), preventing unwanted inflammatory signaling in sensitive in vitro models.

Comparative Analysis: Epithalon and Related Longevity Research Compounds

Within preclinical research investigating cellular senescence, mitochondrial function, and longevity pathways, Epithalon is often evaluated alongside other synthetic peptides targeting distinct biological mechanisms. The table below outlines key technical distinctions among common comparative compounds available within our research database:

Comparative Analysis within Comparative Longevity Studies (Continued)

In multi-arm comparative studies, investigators frequently analyze Epithalon against mitochondrial-targeted compounds such as /research-peptides/mots-c and /research-peptides/ss-31. While mitochondrial peptides primarily target energetic homeostasis and reactive oxygen species (ROS) reduction, Epithalon specifically acts on nuclear and pineal pathways regulating telomere length and circadian gene networks. Additionally, researchers evaluating tissue-level extracellular matrix gene expression may contrast bioregulator activity with tripeptides like /research-peptides/ghk-cu.

Evaluating Vial Sizes: 10mg vs. Alternative Fill Formats

Selecting the appropriate vial mass depends on trial scale and daily usage patterns. While the 10mg format is the standard unit for moderate-scale rodent dosing or repeated cell culture passages, laboratories must assess whether alternative fill sizes better align with their operational workflow.

If a project requires smaller assay volumes or intermittent screening, smaller fill sizes reduce the number of reconstituted days in cold storage. Conversely, high-throughput automated platforms running continuous multi-well plates may benefit from larger bulk configurations. To review available sizing and bulk batch availability, visit the primary product/epithalon listing or consult our wholesale department for custom bulk fill requests.

Preclinical Mechanistic Research: Telomerase Activation and Circadian Pathways

Preclinical literature demonstrates that Epithalon interacts with nuclear chromatin to modulate gene expression. Primary areas of investigation include:

• Telomerase Activation: In vitro assays on human somatic cells indicate that Epithalon induction promotes expression of the catalytic subunit of telomerase (TERT), leading to telomere elongation and increased proliferative capacity in senescent cell cultures. • Circadian Rhythm Regulation: Animal studies in rodent models suggest that Epithalon restores nocturnal melatonin secretion by upregulating pineal-specific transcription factors, thereby modulating central circadian clock mechanisms. • Chromatin Structure Modulation: Structural biochemistry studies suggest that short bioregulator peptides like Epithalon bind to specific histone tails and DNA sequences, facilitating chromatin decompaction and enhancing transcriptional access to specific promoter regions.

PX1 Research Quality Standards & Order Procurement

PX1 Research manufactures all research compounds within USA-based, GMP-compliant facilities adhering to ISO 17025 laboratory guidelines. Every lot of Epithalon is synthesized using high-yield SPPS techniques, washed, lyophilized, and analyzed independently prior to packaging.

Orders placed before standard cutoff times ship the same day from our logistics hubs in California and Arizona. Each shipment includes a lot-matched Certificate of Analysis detailing exact HPLC purity percentages and mass spectrometry graphs, ensuring full transparency for academic, biotechnology, and institutional buyers.