Description
Buy DSIP Peptide | Delta Sleep-Inducing Peptide for Research | High Purity Europe
Welcome to euresearchpeptides.com — your trusted source for premium, laboratory-grade research peptides in Europe. Our DSIP peptide (Delta Sleep-Inducing Peptide) is a synthetic neuropeptide extensively studied for its effects on sleep regulation, stress adaptation, and neuroprotection in research settings. buy DSIP peptide online Europe
What Is DSIP Peptide?
DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nonapeptide first isolated in 1977 from the cerebral venous blood of rabbits during thalamic stimulation. The peptide consists of nine amino acids with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. DSIP is recognized for its ability to promote sleep by modulating delta wave activity in electroencephalogram (EEG) recordings across multiple mammalian species including rabbits, rats, mice, and humans. buy DSIP peptide online Europe
This peptide is strictly intended for laboratory research use only and is not for human consumption. Our DSIP is manufactured using solid-phase peptide synthesis (SPPS) and purified via high-performance liquid chromatography (HPLC) to achieve purity exceeding 98%. buy DSIP peptide online Europe
How DSIP Works: Mechanism of Action
In research models, DSIP exerts its biological effects through several well-characterized mechanisms:
Sleep Modulation: DSIP induces and promotes delta sleep (slow-wave sleep) in a dose-dependent manner. Research demonstrates a U-shaped activity curve for both dosage and infusion timing. Unlike traditional hypnotic compounds, DSIP appears to normalize sleep patterns rather than act as a sedative.
Stress Protection: DSIP demonstrates significant stress-protective and antioxidant effects, protecting brain mitochondria from hypoxia-induced damage. This neuroprotective property makes DSIP valuable for studying cellular stress responses.
Neurotransmitter Regulation: The peptide affects electrophysiological activity and neurotransmitter levels in the brain, including interactions with the serotonergic and dopaminergic systems.
Circadian Rhythm Influence: DSIP has been observed to affect circadian and locomotor patterns, hormonal levels, and psychological performance in research models.
Research Applications
| Research Area | Application |
|---|---|
| Sleep Research | Delta wave modulation, insomnia models, circadian rhythm studies |
| Neuroprotection | Hypoxia protection, oxidative stress reduction, mitochondrial preservation |
| Stress Research | Stress adaptation, anxiety models, neuroendocrine response studies |
| Chronobiology | Circadian rhythm regulation, locomotor activity patterns |
| Neuropharmacology | Drug withdrawal studies, neurotransmitter interaction research |
| Immunohistochemistry | DSIP antibody development, tissue localization studies |
Performance Benefits for Research
| Attribute | Specification |
|---|---|
| Purity | >98% (HPLC verified) |
| Molecular Formula | C35H48N10O15 (free base) |
| Molecular Weight | 848.81 g/mol (free base) |
| CAS Number | 62568-57-4 (free base) |
| Sequence | H-Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu-OH |
| Appearance | White to off-white lyophilized powder |
| Alternative Names | Delta Sleep-Inducing Peptide, Emideltide |
| Endotoxin Level | <0.05 EU/mg |
| Salt Form | Acetate or TFA (specify upon order) |
Solubility Profile
For optimal research results, follow these reconstitution guidelines:
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Primary solvent: Sterile 18 MΩ-cm distilled water or bacteriostatic water
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Minimum concentration: Reconstitute to not less than 100 µg/mL
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Alternative solvents: Dilute acetic acid for enhanced solubility
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Solubility in water: 0.5 mg/mL
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Solubility in DMSO: 10 mM
Reconstitution Protocol:
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Allow vial to reach room temperature (25-45 minutes) before opening
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Briefly vortex or tap the vial to concentrate material at the bottom
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Add sterile aqueous solution slowly down the vial wall
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Invert the tube 5 times by hand for homogeneous solution – do not shake
Stability and Storage Recommendations
| Condition | Storage Method |
|---|---|
| Lyophilized Powder | Store at -20°C or below, desiccated, protected from light |
| Room Temperature Stability | Stable for up to 3 weeks |
| Reconstituted Solution (Short-term) | Store at 2-8°C (35.6-46.4°F) for 2-7 days |
| Reconstituted Solution (Long-term) | Store at -20°C or below; add carrier protein (0.1% HSA or BSA) |
| Half-life in vitro | Approximately 15 minutes due to aminopeptidase degradation |
| Shelf Life | 12-24 months when stored properly in lyophilized form |
Important: Avoid repeated freeze-thaw cycles. Aliquot reconstituted peptide before freezing.
Handling Protocols
For research use only. Proper handling ensures experimental integrity:
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Wear appropriate personal protective equipment (PPE) including gloves and lab coat
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Allow lyophilized peptide to reach room temperature before opening to prevent condensation
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Reconstitute just before use for best results and reproducibility
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Do not vortex after reconstitution – gentle inversion only
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Label aliquots with date, concentration, and lot number
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Use sterile techniques throughout all handling procedures
Quality Standards at EU Research Peptides
Our DSIP peptide is manufactured under strict quality control protocols:
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Synthesis: Solid-phase peptide synthesis (SPPS) with Fmoc chemistry
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Purification: HPLC purification to >98% purity
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Verification: Mass spectrometry (MS) confirmation of molecular weight
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Quality Control: Each batch includes Certificate of Analysis (COA) with HPLC chromatogram and MS spectrum
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Facility: ISO-classified cleanroom manufacturing
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Shipping: Ice chest with ice pads for temperature-controlled delivery
Why Researchers Choose EU Research Peptides
European-Based Operations: We are strategically located in the EU, ensuring fast, reliable shipping across Europe without customs delays.
Premium Quality: Every peptide batch undergoes rigorous third-party testing for purity, stability, and endotoxin levels.
Research Compliance: All products are labeled “For Research Use Only” and comply with EU chemical regulations including REACH and CLP.
Technical Support: Our team provides comprehensive documentation including COAs, MSDS, and reconstitution protocols.
Competitive Pricing: Bulk discounts available for research institutions and volume orders.
👉 Explore our complete catalog of research peptides at our official homepage.
Safety Considerations
DSIP peptide is intended for laboratory research purposes only. It is not for human consumption, therapeutic use, or veterinary applications. The FDA has not approved DSIP for any therapeutic application. Researchers should:
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Follow institutional biosafety guidelines
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Use appropriate personal protective equipment (PPE)
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Handle all peptides with sterile technique
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Dispose of materials according to local regulations
Known Research Applications (Citations)
DSIP has been studied across multiple research domains:
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Sleep Research: Schneider-Helmert D, Schoenenberger GA. “The influence of synthetic DSIP (delta-sleep-inducing-peptide) on disturbed human sleep.” Experientia. 1981;37(9):913-7
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Radioimmunoassay Development: Ekman R, Larsson I, Malmquist M, Thorell JL. Radioimmunoassay of delta sleep-inducing peptide using an iodinated p-hydroxyphenylpropionic acid derivative as tracer
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Immunohistochemistry: Charnay Y, Golaz J, Vallet PG, Bouras C. Production and immunohistochemical application of monoclonal antibodies against delta sleep-inducing peptide. J Chem Neuroanat. 1992
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Neuroprotection: DSIP protects brain mitochondria from hypoxia-induced damage and exerts antioxidant effects
Frequently Asked Questions (FAQ)
What is DSIP peptide?
DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nonapeptide first isolated from rabbit cerebral venous blood in 1977 . It consists of nine amino acids (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) and is studied for its effects on sleep regulation, stress adaptation, and neuroprotection.
What is the molecular formula and weight of DSIP?
The molecular formula is C35H48N10O15 with a molecular weight of 848.81 g/mol (free base).
What is the CAS number for DSIP?
The CAS number for DSIP free base is 62568-57-4.
What purity level does EU Research Peptides offer for DSIP?
Our DSIP peptide is tested at >98% purity by HPLC with mass spectrometry confirmation. Each batch includes a Certificate of Analysis (COA) with detailed purity data.
How should I store DSIP peptide?
Lyophilized DSIP should be stored at -20°C or below, desiccated, and protected from light . It remains stable at room temperature for up to 3 weeks. After reconstitution, refrigerate at 2-8°C for 2-7 days or freeze at -20°C for long-term storage.
Is DSIP peptide soluble in water?
Yes, DSIP is soluble in water at a concentration of 0.5 mg/mL. For reconstitution, use sterile 18 MΩ-cm distilled water or bacteriostatic water at a minimum concentration of 100 µg/mL.
What is the recommended reconstitution protocol?
Allow the vial to reach room temperature for 25-45 minutes, briefly vortex to concentrate material, add sterile aqueous solution slowly, then invert the tube 5 times by hand. Do not shake or vortex after reconstitution.
What is the in vitro half-life of DSIP?
DSIP has a half-life of approximately 15 minutes in vitro due to degradation by aminopeptidases.
What are the primary research applications for DSIP?
DSIP is studied in sleep research (delta wave modulation), neuroprotection (hypoxia protection, oxidative stress reduction), stress research, circadian rhythm studies, and neuropharmacology (drug withdrawal studies) .
What is the amino acid sequence of DSIP?
The full sequence is H-Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu-OH.
Is DSIP FDA approved for therapeutic use?
No, the FDA has not approved DSIP for any therapeutic application. DSIP is a research peptide intended for laboratory use only.
Can I purchase DSIP peptide in bulk?
Yes, EU Research Peptides offers volume discounts for bulk orders. Contact our customer service team for customized quotes.
How should reconstituted DSIP be stored for long-term use?
For long-term storage, add a carrier protein such as 0.1% HSA or BSA, then store at -20°C or below. Aliquot to avoid repeated freeze-thaw cycles.
What documentation is provided with each order?
Each order includes a Certificate of Analysis (COA), material safety data sheet (MSDS), and reconstitution protocol.
How long does shipping take within Europe?
Standard shipping within the EU takes 3-5 business days. Temperature-controlled express shipping options are available for urgent research needs.











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