Dihexa 20mg — Vial Spec, Reconstitution Math & COA
A 20mg vial specification of Dihexa provides an exact analytical mass designed for high-throughput in vitro binding assays, receptor signaling studies, and enzymatic stability profiling. This technical documentation details the physicochemical characteristics of Dihexa, precise reconstitution math across multiple diluent volumes, solvent compatibility profiles, and lot-specific verification procedures for laboratory investigators.
Quick answer
A 20mg vial specification of Dihexa provides an exact analytical mass designed for high-throughput in vitro binding assays, receptor signaling studies, and enzymatic stability profiling. This technical documentation details the physicochemical characteristics of Dihexa, precise reconstitution math across multiple diluent volumes, solvent compatibility profiles, and lot-specific verification procedures for laboratory investigators.
Key takeaways
- A 20mg mass allocation of [Dihexa](/research-peptides/dihexa) (N-hexanoic-Tyr-Ile-(6-aminohexanoic amide)) represents a standard quantitative unit utilized in high-density cellular assays and preclinical receptor binding workflows.
- [Dihexa](/research-peptides/dihexa) features a synthetic peptide structure modified with an N-terminal hexanoyl chain and a C-terminal hexanoic amide group.
- Calculating final working concentrations for a 20mg vial depends on the precise volume of primary solvent introduced.
- In vitro assays evaluating c-Met phosphorylation or dendritic spine formation require strict control over solvent cytotoxicity.
Overview & Format Specifications for Dihexa 20mg
A 20mg mass allocation of Dihexa (N-hexanoic-Tyr-Ile-(6-aminohexanoic amide)) represents a standard quantitative unit utilized in high-density cellular assays and preclinical receptor binding workflows. Laboratory researchers selecting a 20mg specification typically require sufficient active compound to establish multi-plate concentration curves, run comparative control groups, or perform serial dilutions across extended in vitro research timelines without introducing inter-batch variance.
While PX1 Research maintains a rigorous catalog of analytical reagents—including specialized formats like Dihexa Capsules 10mg for solid-state assay designs—investigators frequently evaluate 20mg lyophilized or raw powder specifications for customized solution preparation. If an exact 20mg vial unit is not directly listed in our immediate stock, PX1 provides equivalent mass options across our catalog of all research peptides, ensuring that every lot adheres to identical HPLC/MS and endotoxin screening protocols.
Understanding the precise chemical payload in a 20mg format is critical for maintaining experimental reproducibility. Dihexa is a small oligopeptide derivative engineered for high affinity toward hepatocyte growth factor (HGF) and its receptor c-Met in preclinical models. In a controlled laboratory environment, converting 20mg of pure compound into reliable stock solutions requires strict adherence to solvent interaction rules, molecular weight calculations, and volumetric precision.
Chemical Structure, Hydrophobicity, and Solvent Dynamics
Dihexa features a synthetic peptide structure modified with an N-terminal hexanoyl chain and a C-terminal hexanoic amide group. This chemical architecture significantly alters its physical properties compared to classical unmodified hydrophilic peptides. With a molecular formula of C27H44N4O5 and a molecular weight of approximately 504.66 g/mol, Dihexa exhibits pronounced lipophilicity and moderate aqueous solubility limits.
Because of its hydrophobic hexanoyl modifications, attempting direct reconstitution of a 20mg mass into pure aqueous buffers such as 0.9% bacteriostatic sodium chloride or plain phosphate-buffered saline (PBS) often results in incomplete dissolution, precipitation, or aggregate formation. Preclinical literature demonstrates that primary dissolution must be achieved using dimethyl sulfoxide (DMSO) or ethanol prior to aqueous buffer dilution.
When preparing stock solutions from a 20mg dry mass, scientists typically utilize anhydrous DMSO to establish a high-concentration primary stock (e.g., 10 mg/mL to 20 mg/mL). Once fully dissolved, secondary working solutions can be titrated into aqueous culture media or physiological buffers, ensuring that the final organic solvent concentration remains below cytotoxic thresholds for in vitro tissue models.
Reconstitution Math for a 20mg Mass Mass Spec Standard
Calculating final working concentrations for a 20mg vial depends on the precise volume of primary solvent introduced. To streamline laboratory calculations, researchers rely on standard mass-over-volume formulas: Concentration (C) = Mass (m) / Volume (V).
For a 20mg Dihexa payload, adding 1.0 mL of solvent (such as sterile-filtered DMSO) yields a primary stock concentration of 20.0 mg/mL (20.0 µg/µL or approximately 39.63 mM). Adding 2.0 mL of solvent produces a stock concentration of 10.0 mg/mL (10.0 µg/µL or 19.82 mM). Introducing 3.0 mL of solvent yields a stock concentration of 6.67 mg/mL (6.67 µg/µL or 13.21 mM).
To verify dilutions across microgram, milligram, and micromolar scales, lab managers should utilize the PX1 reconstitution calculator. This interactive tool prevents volume calculation errors, ensuring that secondary aliquots delivered to cell culture microplates accurately reflect target micromolar (µM) or nanomolar (nM) assay parameters.
Solvent Compatibility & In Vitro Buffer Preparation
In vitro assays evaluating c-Met phosphorylation or dendritic spine formation require strict control over solvent cytotoxicity. Primary stocks of Dihexa prepared in DMSO at 20 mg/mL must be diluted into cell culture media (such as DMEM or Neurobasal medium) to reach working concentrations between 1 pM and 100 nM.
It is essential to calculate the final DMSO percentage in the assay medium. Generally, primary cell culture assays require a final DMSO concentration of less than 0.1% (v/v) to prevent membrane lysis or non-specific enzymatic inhibition. For example, diluting 1 µL of a 10 mg/mL DMSO stock into 10 mL of culture media yields a final Dihexa concentration of 1 µg/mL with a 0.01% DMSO concentration, well within safe parameters for cell viability studies.
All solvent handling procedures should utilize solvent-resistant pipette tips and borosilicate glass or high-density polypropylene microcentrifuge tubes. Polycarbonate containers should be avoided when handling pure DMSO stocks, as trace plasticizers may leach into the research sample and compromise analytical spectrophotometry.
Lot-Matched Certificate of Analysis (COA) & Quality Verification
Every research compound supplied by PX1 Research undergoes rigorous batch-specific verification prior to inventory release. When ordering Dihexa or evaluating equivalent catalog items, research facilities receive a lot-matched Certificate of Analysis detailing high-performance liquid chromatography (HPLC) and mass spectrometry (MS) data.
Purity is verified via reverse-phase HPLC (RP-HPLC), ensuring that total peptide purity equals or exceeds 98.0%. Mass identification is confirmed through electrospray ionization mass spectrometry (ESI-MS) to guarantee that the observed molecular weight matches the theoretical target of 504.66 Da without truncated sequence contaminants or unreacted intermediates.
In addition to purity and structural identity, PX1 mandates endotoxin testing via Chromogenic Reagent LAL (Limulus Amebocyte Lysate) assays. Ensuring endotoxin levels remain below standard analytical thresholds (typically <0.1 EU/mg) is critical for preventing non-specific inflammatory signaling in cell culture models. Laboratories can review lot-specific analytical reports at any time on our COA documentation page.
Aliquot Planning and Cryogenic Storage Guidelines
To maintain the chemical stability of Dihexa over long-term preclinical studies, proper storage protocols must be established immediately upon receipt of the lyophilized product or dry compound mass.
Unopened, lyophilized 20mg vials should be stored at -20°C or -80°C in a desiccated environment protected from light exposure. Under these conditions, the dry compound remains stable for up to 24 months. If stored at standard refrigeration temperatures (2°C to 8°C), the solid compound should be reconstituted within 30 to 60 days.
Once reconstituted in DMSO, the 20mg primary stock should be divided into single-use micro-aliquots (e.g., 20 µL to 50 µL) in dark amber microcentrifuge tubes to prevent light-induced degradation and repeated freeze-thaw cycles. Frozen DMSO stocks stored at -80°C remain stable for extended periods, but repeated thawing must be strictly avoided to prevent micro-precipitation and loss of potency.
Comparative Analysis: Dihexa 20mg vs. Alternate Formats and Cognitive Research Compounds
When designing preclinical screening protocols, laboratory investigators frequently evaluate Dihexa alongside other neurochemical and cellular signaling research peptides to compare potency, receptor specificity, and metabolic stability.
For example, while Dihexa is specifically investigated for its picomolar affinity to HGF/c-Met pathways, compounds such as Semax 30mg are studied for their modulation of brain-derived neurotrophic factor (BDNF) expression and peptidase stability. Similarly, investigators evaluating tissue repair mechanisms may run parallel assays comparing Dihexa’s synaptogenic pathways against endothelial cell proliferation models using BPC-157 10mg. In systemic receptor signaling studies involving growth axis feedback, researchers might also contrast small-molecule oligopeptide actions with pituitary secretagogues like CJC-1295 DAC 5mg.
Selecting between a 20mg dry mass, specialized oral research solids like Dihexa Capsules 10mg, or alternate peptide structures depends entirely on whether the assay setup calls for liquid-chromatography mass spectrometry standards, cellular culture bath applications, or automated high-throughput screening arrays.
Vial Size Selection: Evaluating 20mg vs. Small or Large Scale Assay Needs
Choosing the appropriate vial size is a key factor in budgeting and reagent conservation for research laboratories. A 20mg unit provides a versatile intermediate mass that bridges the gap between small-scale pilot assays and large-batch animal study protocols.
For initial feasibility studies or single-plate binding assays, smaller masses (such as 5mg or 10mg) may be sufficient to minimize unused reagent. However, for multi-week cell culture series or multi-dose rodent tissue models where batch uniformity across weeks is critical, preparing a single master stock from a 20mg vial reduces inter-assay variance.
For institutional laboratories or high-volume screening facilities running large-scale comparative assays, purchasing in larger quantities or establishing a wholesale institutional account provides greater cost efficiency and batch consistency. Facility managers can explore volume options via our wholesale research peptides portal.
Experimental Workflows in Preclinical Research Models
In published preclinical literature, Dihexa has been evaluated in various in vitro and animal models focused on neuroplasticity, spinogenesis, and HGF-mediated cellular pathways. Research indicates that Dihexa binds to HGF with high affinity (Kd = 65 pM), facilitating c-Met dimerization and downstream signaling cascades including the PI3K/Akt and MAPK/ERK pathways.
In primary hippocampal and cortical neuronal cultures, researchers measure parameters such as dendritic arborization, spine density, and synaptogenesis following micro-molar and pico-molar exposures to Dihexa solutions. In vivo rodent models utilize controlled administration protocols to study cognitive performance metrics, spatial memory retention in maze assays, and neuroprotective responses to neurodegenerative challenges.
All experimental designs using Dihexa must remain strictly within controlled laboratory parameters. In vitro assays require precise vehicle control groups (containing matching DMSO concentrations without peptide) to ensure observed cellular changes are strictly attributable to the research compound.
PX1 Research Quality Infrastructure & Supply Logistics
PX1 Research operates as a premier supplier of laboratory-grade research compounds across the United States. Every lot of peptide or small-molecule derivative offered by PX1 is synthesized in state-of-the-art, GMP-compliant facilities and tested in an independent ISO 17025 accredited laboratory.
We enforce rigorous quality controls, guaranteeing that every chemical unit meets defined purity, identity, and safety standards. Orders placed Monday through Friday ship same-day from our dual fulfillment centers in California and Arizona, utilizing temperature-controlled, secure packaging to safeguard product integrity during transit.
Investigators seeking comprehensive compound datasheets, safety data sheets (SDS), or specialized analytical standards are encouraged to explore our complete catalog of all research peptides or consult our educational materials in the central PX1 research library.
Frequently Asked Questions
What is the molecular weight and purity standard for Dihexa 20mg?
Dihexa (C27H44N4O5) has a molecular weight of approximately 504.66 g/mol. PX1 Research mandates a minimum purity standard of ≥98.0% verified via high-performance liquid chromatography (HPLC) and mass spectrometry (MS).
Why does Dihexa require organic solvents like DMSO for primary reconstitution?
Due to its hydrophobic N-hexanoyl chemical modifications, Dihexa exhibits limited direct solubility in aqueous buffers. Dissolving the dry mass in DMSO or ethanol first establishes a clear primary stock that can subsequently be diluted into culture media or aqueous saline without micro-precipitation.
Does PX1 Research currently supply Dihexa in a 20mg lyophilized vial?
PX1 Research offers various Dihexa formats, including specialized options like Dihexa Capsules 10mg for solid-state research. If a standard 20mg vial unit is not listed on the live storefront, equivalent overall masses and custom analytical options are available through our catalog.
How is the concentration calculated for a 20mg vial reconstituted with 2 mL solvent?
Adding 2.0 mL of solvent to a 20mg dry mass yields a primary stock concentration of 10.0 mg/mL (10.0 µg/µL or ~19.82 mM). You can calculate custom solvent volumes using the PX1 reconstitution calculator.
What endotoxin limits are verified for PX1 research compounds?
PX1 subjects every production lot to Chromogenic LAL endotoxin testing, ensuring levels remain below <0.1 EU/mg to prevent non-specific immune signaling or cytotoxicity in cell culture assays.
How should reconstituted Dihexa DMSO stock solutions be stored?
Reconstituted primary stocks in DMSO should be divided into small, single-use aliquots and stored at -80°C in light-protected amber tubes to prevent repeated freeze-thaw cycles and chemical degradation.
Where can laboratory personnel access the batch-specific COA for Dihexa?
Lot-matched Certificates of Analysis containing HPLC chromatograms, mass spectra, and endotoxin assay results can be accessed directly on the PX1 COA documentation page using the product lot number.
Related pages
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.