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Nasal Spray

DSIP Nasal Spray

$90

Delta Sleep-Inducing Peptide nasal spray, 5mg total, 80 sprays per bottle.

5mg totalTotal
62.5 mcgPer spray
80Sprays
DSIP (Delta Sleep-Inducing Peptide)
Independently tested
Batch SP26-DSN05 tested 07/17/2026 Qalitex
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Neuro set

DSIP and Semax are grouped as regulatory neuropeptides studied in sleep and stress-response research.

DSIP Nasal Spray
DSIP Nasal SprayThis item
$90
Set total$198$220

For research use only — not for human consumption.

Certificate of Analysis
Net Content 5.4 mg
Lot # SP26-DSN05

Tested by Qalitex · 07/17/2026

Reference Chemistry

Chemical Specification

CAS #
62568-57-4
Molecular Formula
M.W.
848.81 g/mol

Reference chemistry verified against PubChem. HPLC purity is the most recent reported value from an on-file COA for this product.

RESEARCH USE ONLY — not for human or animal consumption. Not for diagnostic or therapeutic use.

Key Ingredients

DSIP (Delta Sleep-Inducing Peptide)

A nine-amino acid neuropeptide (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) studied for its effects on sleep architecture, delta wave EEG patterns, and neuroendocrine stress response modulation.

Discover the research
Sleep ResearchNeuromodulationDelta Wave
Description

DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nonapeptide with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu. First isolated from cerebral venous blood during slow-wave sleep, DSIP has been studied for its neuromodulatory properties and role in sleep architecture.

Research Background

Research on DSIP has explored its effects on sleep spindle activity, delta wave amplitude, and cortisol modulation. Studies suggest DSIP may act through multiple mechanisms including GABA receptor interaction and hypothalamic-pituitary axis regulation. For research use only.

Ingredients & Dosage
DSIP 62.5 mcg per spray

Inactive ingredients / formulation base

Normal Saline (pH 6.0) Base solution
Benzalkonium Chloride (BKC) 0.01% preservative
Lab-Grade Distilled Water QS

Amino Acid Sequence: Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu

SKU: DSN0005MG

Shipping & Storage

Shipping: Every order ships 2-Day — free on orders $150+, $4.99 otherwise. Orders placed before 3 PM PT on a business day dispatch the same day, and delivery is typically 2 business days after dispatch.

Storage: Store in a cool, dry place. Refrigeration recommended after opening for optimal stability. Keep away from direct sunlight.

Regulatory Statement

For laboratory and research use only. Not for human or animal consumption. This product is sold exclusively to qualified researchers and licensed laboratories.

This product is not a drug, food, or cosmetic, and is not for diagnostic or therapeutic use. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

A certificate of analysis (COA) is available for this product — view the published COA.

DSIP Nasal Spray $90
DSIP

Nonapeptide

Documented in Peer-Reviewed Research

Neuromodulatory nonapeptide for sleep architecture research

DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring nine-amino acid neuropeptide first isolated from cerebral venous blood. It has been studied for its effects on sleep architecture, particularly delta wave (slow-wave) sleep patterns.

Sleep Architecture
Delta Wave EEG
Neuromodulation
Stress Response

Published Research Data

Quantified findings from peer-reviewed studies on DSIP


9

amino acid residues in the DSIP nonapeptide sequence

Schoenenberger & Monnier, PNAS 1977


96-99%

HPLC-verified purity range across published batch testing

Stemcode Peptides COA data

Published Research

Studies on DSIP

1986 DSIP: a review of its functional significance Neurosci Biobehav Rev
Neurosci Biobehav Rev, 1986 View Publication
1977 Characterization of a delta electroencephalogram-sleep-inducing peptide Proc Natl Acad Sci

Original characterization of DSIP isolated from cerebral venous blood and its effects on delta wave EEG sleep patterns.

Proc Natl Acad Sci, 1977 View Publication
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Why Research Peptides

Amino Acids
Single Units
Proteins
Large Chains
Small Molecules
Synthetic
Polypeptides
>50 AA
Defined primary sequence
Varies
Precise molecular weight <10 kDa
Varies
Lyophilization compatible
Varies
Varies
Limited
Receptor binding specificity data
Limited
Varies
Limited
Stable in aqueous reconstitution
Varies
Varies
Sequence customizable for research
Limited
Limited

All comparisons reflect general industry practices. Stemcode products are intended solely for laboratory research and are not for human consumption.

The Research Standard

Generic API
Bulk Supplier
Research Blend
Compound Mix
Liquid Solution
Pre-dissolved
Unverified Source
Grey Market
HPLC purity testing with published COAs
Varies
Varies
Independent third-party COA
Varies
Limited
Ready-to-use liquid format
Varies
Varies
Varies
Varies
Sequence verified by mass spec
Limited
Limited
Endotoxin / LAL tested
Limited
Limited
Documented sterile filtration
Varies
Varies

All comparisons reflect general industry practices. Stemcode products are intended solely for laboratory research and are not for human consumption.

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Every compound is documented in published, peer-reviewed literature. Our research library indexes 43 studies across 35 journals for 20 compounds.

Our Studies →
43

Peer-reviewed studies in our research library have examined the mechanisms of action of these peptide compounds.

20
Peptide Compounds
35
Journals Referenced
43
Published Studies

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