# DSIP Nasal Spray

> Ready-mixed DSIP solution in a metered 15 mL or 30 mL spray bottle

All products are sold strictly for laboratory research use only. Not for human or veterinary use.

- Web page: https://peptidemedixeu.com/en/products/dsip-nasal-spray/
- Brand: Peptide Medix EU
- Category: [Nasal Peptide Sprays](https://peptidemedixeu.com/en/collections/nasal-peptide-sprays/)
- CAS number: 62568-57-4
- from €80 (EUR)

## Sizes and prices (EUR)

| Size | Price | SKU |
| --- | --- | --- |
| 15 mL | €80 | DSIP-NASAL-SPRAY-15-ML |
| 30 mL | €131 | DSIP-NASAL-SPRAY-30-ML |

_Catalog prices at build time; the web page and checkout are authoritative._

## Specifications

- **CAS number:** 62568-57-4
- **Molecular formula:** C35H48N10O15
- **Molecular weight:** 848.81 g/mol
- **Amino acid sequence:** Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu (WAGGDASGE)
- **Peptide class:** Endogenous nonapeptide neuromodulator
- **Form:** Pre-mixed aqueous solution in a bottle fitted with a metered spray pump
- **Available sizes:** 15 mL, 30 mL
- **Metered delivery:** Approximately 0.1 mL per actuation, giving roughly 150 actuations per 15 mL fill
- **Peptide concentration:** Stated on the lot-matched certificate of analysis for each fill
- **Active component:** DSIP (delta sleep-inducing peptide)
- **Purity (raw material):** ≥99% by HPLC; lot-matched COA available
- **Reconstitution:** None required — supplied pre-mixed and ready to dispense
- **Storage:** 2–8 °C, upright, protected from light; do not freeze the filled bottle

## Description

Delta sleep-inducing peptide is offered here as a ready-to-use aqueous solution in a metered spray bottle instead of lyophilised powder that has to be reconstituted. It is the same molecule as our DSIP vials: the nonapeptide Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, originally isolated from rabbit cerebral venous blood during slow-wave sleep and investigated since as an endogenous neuromodulator.

The metered pump releases about 0.1 mL per press — roughly 150 presses from the 15 mL bottle and double that from the 30 mL — and the peptide concentration of each lot is given on its certificate of analysis rather than derived from bottle size. Two features of the WAGGDASGE sequence dictate how a filled bottle should be treated: in water, the aspartate-glycine pair is a known hot spot for deamidation and isomerisation, and the N-terminal tryptophan oxidises and photodegrades readily. Keeping the bottle upright in a fridge at 2–8 °C, out of the light and never frozen, slows all of these reactions. Labs comparing delivery routes generally check the volume per press by weighing before a study begins, because priming and technique both affect it.

## Frequently asked questions

### What distinguishes it from the DSIP vial?

It is the same nonapeptide to the same specification, just in another format: a pre-mixed aqueous solution in a metered spray bottle that is ready to use, whereas the vial holds lyophilised powder you reconstitute yourself.

### What volume does one press deliver?

About 0.1 mL, which gives around 150 presses per 15 mL bottle. The real volume depends on whether the pump is primed and on how it is pressed, so studies that rely on it usually confirm it gravimetrically.

### Why must it be refrigerated?

Dissolved peptides degrade more quickly than lyophilised ones. In water, DSIP's aspartate-glycine motif is prone to deamidation and isomerisation, while its tryptophan oxidises and breaks down under light. Cold, dark, upright storage slows all three.

### Which documents are provided?

The peptide raw material is HPLC-tested by an independent lab to ≥99%, and the certificate for your lot covers identity, purity and the concentration of the filled solution. File it with your study records for traceability.

### Can I use the solution for assays unrelated to nasal delivery?

You can, but it contains formulation excipients absent from a reconstituted vial, and these may disturb chromatography and some assay chemistries. For work not focused on delivery, the lyophilised vial is usually the cleaner starting point.

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All products offered on this website are intended solely for in-vitro laboratory research and development by qualified professionals. They are not drugs, foods, cosmetics or dietary supplements, and are not intended to diagnose, treat, cure or prevent any disease. Products must not be introduced into humans or animals in any manner. By purchasing, you confirm that you are a qualified researcher and accept full responsibility for handling and storage in accordance with applicable laws.

Peptide Medix EU · https://peptidemedixeu.com/en/products/dsip-nasal-spray/