DSIP 5mg — Vial Spec, Reconstitution Math & COA
A 5mg vial of Delta Sleep-Inducing Peptide (DSIP) provides a high-purity, standardized mass of lyophilized nonapeptide engineered for precise volumetric reconstitution in preclinical protocols. This reference guide outlines the molecular characteristics, reconstitution mathematics, aliquot handling, and quality assurance standards required for laboratory evaluation of DSIP.
Quick answer
A 5mg vial of Delta Sleep-Inducing Peptide (DSIP) provides a high-purity, standardized mass of lyophilized nonapeptide engineered for precise volumetric reconstitution in preclinical protocols. This reference guide outlines the molecular characteristics, reconstitution mathematics, aliquot handling, and quality assurance standards required for laboratory evaluation of DSIP.
Key takeaways
- The [DSIP 5mg vial](/product/dsip-5mg) is a standard laboratory configuration containing 5 milligrams of high-purity, lyophilized Delta Sleep-Inducing Peptide synthesized as a single-chain nonapeptide.
- Delta Sleep-Inducing Peptide is an endogenous nonapeptide with the primary amino acid sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu and a molecular weight of approximately 848.81 g/mol.
- Accurate volumetric reconstitution is essential for maintaining precise dosing metrics in preclinical assays.
- To preserve structural integrity following reconstitution, selection of the proper solvent and execution of correct aliquot protocols are critical.
Overview of the DSIP 5mg Research Vial Specification
The DSIP 5mg vial is a standard laboratory configuration containing 5 milligrams of high-purity, lyophilized Delta Sleep-Inducing Peptide synthesized as a single-chain nonapeptide. This standardized mass format is designed for primary investigators and institutional facilities conducting multi-assay preclinical trials, neurochemical binding studies, or longitudinal physiological investigations in rodent models. Selecting a 5mg vial mass allows laboratory personnel to establish flexible working concentrations while minimizing container volume overhead and lot variation across extended research schedules.
Lyophilized under precise vacuum controls, the solid matrix appears as a uniform white cake stabilized with an inert bulking agent. In laboratory environments, this format protects the delicate peptide bonds against thermal ambient degradation prior to reconstitution. Researchers evaluating sleep architecture, central nervous system signaling, or endocrine axis interaction frequently utilize the 5mg mass standard to prepare consistent master stock solutions for serial dilution across experimental cohorts.
Molecular Profile and Mechanism of Delta Sleep-Inducing Peptide
Delta Sleep-Inducing Peptide is an endogenous nonapeptide with the primary amino acid sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu and a molecular weight of approximately 848.81 g/mol. Discovered originally in rabbit cerebral venous blood during induced slow-wave sleep states, DSIP exhibits complex neuromodulatory properties that reach beyond isolated somnolence pathways into stress response systems and pituitary-adrenal axes.
Preclinical studies suggest that DSIP readily crosses the blood-brain barrier via passive and transport-mediated processes, acting upon central receptors to promote delta-wave (slow-wave) sleep patterns without disrupting natural REM phase distribution. In vitro assays and animal models demonstrate that the compound modulates basal and stimulated luteinizing hormone (LH) release, blunts stress-induced adrenocorticotropic hormone (ACTH) surges, and mitigates oxidative stress markers within neural tissue. Investigators accessing our neurobiology research hub can examine detailed primary literature covering these enzymatic and receptor-binding pathways.
Reconstitution Mathematics for a 5mg DSIP Vial
Accurate volumetric reconstitution is essential for maintaining precise dosing metrics in preclinical assays. When reconstituting a 5mg (5,000 micrograms) lyophilized DSIP cake, the final working concentration is dictated directly by the volume of diluent added to the sealed vial. To simplify these volumetric calculations during bench setup, technicians can consult our interactive peptide reconstitution calculator.
Adding 1.0 mL of bacteriostatic or sterile diluent to a 5mg vial yields a high-density master solution at a concentration of 5.0 mg/mL (500 µg per 0.1 mL or 10 U-100 units). Introduce 2.0 mL of diluent to produce a mid-tier working solution of 2.5 mg/mL (250 µg per 0.1 mL). Alternatively, diluting the 5mg cake with 3.0 mL of liquid yields a concentration of approximately 1.67 mg/mL (166.7 µg per 0.1 mL). Choosing the appropriate volume depends entirely on the precision limits of your laboratory's micro-pipetting equipment and the volumetric dosing thresholds mandated by your institutional animal care protocol.
Aliquot Planning and Diluent Selection Protocols
To preserve structural integrity following reconstitution, selection of the proper solvent and execution of correct aliquot protocols are critical. Bacteriostatic water containing 0.9% benzyl alcohol is recommended for multi-use working solutions stored over multiple days, as the antimicrobial agent prevents bacterial proliferation in refrigerated conditions. For single-use or cell-culture applications where benzyl alcohol could induce cytotoxic responses, sterile 0.9% sodium chloride or phosphate-buffered saline (PBS) should be utilized instead.
Repeated freeze-thaw cycles subject the peptide backbone to shear forces and rapid osmotic shifts that accelerate hydrolysis and aggregation. Once the lyophilized cake is fully dissolved via gentle swirl—never violent agitation—the solution should be immediately divided into single-use micro-aliquots using sterile polypropylene tubes. These secondary containers should be labeled with the exact concentration, date of reconstitution, and lot number before deep freezing at -20°C or -80°C.
Quality Assurance: HPLC/MS Analysis and Lot-Matched COAs
At PX1 Research, every batch of manufactured peptide undergoes rigorous analytical validation prior to release. High-Performance Liquid Chromatography (HPLC) is employed to verify chemical purity, ensuring that the target nonapeptide constitutes >98% of the total peptide material. Concurrently, Mass Spectrometry (MS) confirms the exact molecular mass (848.81 Da), ruling out amino acid deletions, truncations, or synthesis artifacts.
In addition to purity and mass verification, every lot is subjected to chromogenic LAL assays to ensure bacterial endotoxin levels remain strictly below standard preclinical thresholds (<0.05 EU/mg). Investigators can independently verify their batch characteristics by visiting our transparent lot-matched COA lookup tool. Providing fully traceable, ISO 17025 accredited documentation guarantees that confounding impurities or endotoxins do not introduce unwanted variables into sensitive laboratory models.
Storage Stability and Lyophilized Matrix Handling
Lyophilized DSIP remains highly stable when stored under controlled environment conditions. Sealed vials kept at -20°C in a desiccated, dark environment retain structural stability for up to 24 months. If short-term storage at 2°C to 8°C is necessary during transit or pre-assay staging, the desiccated cake maintains integrity for several weeks, provided exposure to direct ultraviolet light and ambient moisture is strictly prevented.
Following reconstitution, liquid working solutions stored at 2°C to 8°C should be utilized within 14 to 21 days if prepared with bacteriostatic water. Single-use aliquots frozen at -20°C remain stable for up to 6 months, while storage at -80°C extends stability up to 12 months. Researchers should avoid standard frost-free freezers, as their internal temperature cycles create subtle thermal fluctuations that accelerate peptide degradation over extended timeframes.
Comparative Analysis: DSIP vs. Related Neuro-Modulatory Research Peptides
When designing protocols focused on central nervous system regulation, sleep architecture, or endocrine balance, researchers often compare DSIP against other prominent peptides within the neuro-modulatory and recovery landscape. Understanding the operational and mechanical distinctions between these compounds allows investigators to select the optimal model for their specific hypothesis.
For instance, while DSIP directly modulates delta-wave sleep induction and HPA-axis stress activity, bioregulatory peptides such as Epithalon influence pineal gland regulation and telomerase activity rather than acute somnolence pathways. Similarly, growth hormone secretagogues like CJC-1295 act on the pituitary gland to stimulate pulsatile GH release, indirectly supporting tissue repair without directly altering delta-wave sleep EEG readings. Furthermore, neuroprotective agents such as Semax target BDNF expression and cognitive processing, contrasting with DSIP's focus on sleep architecture and stress-axis stabilization. To compare these diverse target profiles further, review our comprehensive catalog of research peptides.
Determining Protocol Requirements: 5mg Vial vs. Alternative Mass Configurations
Selecting the correct vial size is a key factor in managing research budgets, reagent waste, and experimental reproducibility. The 5mg mass standard strikes a practical balance between mass availability and storage longevity, making it ideal for medium-sized rodent studies or multi-week cellular protocols requiring consistent working concentrations.
If a project requires pilot testing, single-dose baseline measurements, or small-scale binding assays, smaller mass configurations (such as 2mg vials) may be preferable to minimize the duration that reconstituted solutions remain in liquid storage. Conversely, high-throughput screening or multi-animal longitudinal studies may benefit from larger unit quantities or bulk laboratory ordering options to ensure a single, uniform lot is utilized across the entire dataset, eliminating inter-lot variability.
Sourcing Standards and Supply Chain Integrity at PX1 Research
PX1 Research maintains rigorous manufacturing and logistical standards to support high-level scientific research across North America. All compounds are synthesized in state-of-the-art, GMP-compliant facilities located within the United States. Utilizing modern automated peptide synthesizers, advanced purification systems, and ISO 17025 accredited analytical testing, PX1 ensures that every vial meets exacting chemical specifications.
To prevent thermal degradation during transit, orders are fulfilled directly from our temperature-controlled dispatch centers located in California and Arizona. Orders placed Monday through Friday prior to cut-off times ship the same day. Each package is prepared with thermal protection suited to the compound's stability profile, ensuring that research laboratories receive pristine, stable reagents ready for immediate experimental deployment.
Frequently Asked Questions
What is the exact sequence and molecular weight of DSIP?
Delta Sleep-Inducing Peptide (DSIP) is a nonapeptide with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu and a theoretical molecular weight of 848.81 g/mol.
How is the 5mg concentration calculated when reconstituted with 2mL of diluent?
Reconstituting a 5mg (5,000 µg) vial with 2.0 mL of liquid yields a concentration of 2.5 mg/mL (or 250 µg per 0.1 mL / 10 units on a U-100 volumetric syringe).
What diluent is recommended for maintaining DSIP stability in vitro?
Bacteriostatic water (0.9% benzyl alcohol) is recommended for multi-use reconstituted solutions stored at 2–8°C. For sensitive cell culture or single-use assays, sterile 0.9% saline or PBS is preferred.
How do researchers verify the purity and identity of a DSIP 5mg lot?
Purity (>98%) is verified using High-Performance Liquid Chromatography (HPLC), while molecular weight and identity are confirmed using Mass Spectrometry (MS). Lot-matched certificates of analysis are published for every batch.
What are the endotoxin limits applied to PX1 Research peptide lots?
All peptide lots from PX1 Research undergo LAL chromogenic assays to ensure bacterial endotoxin levels remain strictly below <0.05 EU/mg.
How should reconstituted DSIP aliquots be stored to prevent peptide hydrolysis?
Reconstituted solutions should be divided into single-use micro-aliquots in polypropylene tubes and stored at -20°C or -80°C in a non-frost-free freezer to prevent repeated freeze-thaw degradation.
How does DSIP differ mechanically from GHRH or GHRP research compounds?
DSIP primarily modulates delta-wave EEG activity and central HPA stress response systems, whereas GHRH and GHRP compounds specifically target anterior pituitary receptors to induce growth hormone secretion.
Is the DSIP 5mg format available for immediate dispatch?
PX1 Research ships all in-stock laboratory compounds same-day Monday through Friday from our CA and AZ facilities. Please consult the live catalog listing to confirm current mass options and batch availability.
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