# DSIP Spray

> Research use only. Not for human or veterinary use. Supplied by Veracue Labs.

- Page: https://veracuelabs.com/product/dsip-spray
- Category: Nasal Sprays
- Sizes and prices in USD: 10 mg at $71.49
- Certificate of analysis: none posted on the page. Request one for a specific lot at https://veracuelabs.com/contact-us.
- Prices are a snapshot from 2026-10-17. The product page shows the current price.

## Overview

DSIP Spray is a spray-dispensed bottle of the nonapeptide WAGGDASGE, known as delta sleep-inducing peptide, with an unmodified free N-terminus and C-terminus. Reference values for the free peptide are formula C35H48N10O15, average mass 848.8 g/mol and CAS 62568-57-4, and Emideltide is a registry synonym. Three glycines, two alanines, one tryptophan, one serine and acidic residues at positions five and nine make up the whole chain, with no basic side chain at all.

## Product Details

### DSIP Spray at the Molecular Level

The only peptide named on a bottle of DSIP Spray is a single synthetic nonapeptide, written WAGGDASGE in one-letter code and Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu in three-letter code. DSIP abbreviates delta sleep-inducing peptide, a historical name for this sequence. The name labels the molecule, and Veracue makes no statement about what the material does in any system.

Neither terminus carries a modification: the N-terminus is a free amine, the C-terminus a free carboxylic acid, and all nine residues are L-configured. The registry also lists the peptide as Emideltide. The figures below are reference values for the free peptide, not measured lot results.

### Reference Data

Listed name: DSIP Spray
Peptide: DSIP, delta sleep-inducing peptide (registry synonym: Emideltide)
Chain length: 9 residues, linear nonapeptide
Sequence, one-letter: WAGGDASGE
Sequence, three-letter: Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu
Chain ends: Free N-terminal amine, free C-terminal acid
Molecular formula: C35H48N10O15
Average molecular mass: 848.8 g/mol
Monoisotopic mass (calculated): 848.33 Da
CAS Registry Number: 62568-57-4
Second registry number: 69431-45-4 (NLM MeSH indexing of the same peptide)
PubChem CID: 68816
InChIKey: ZRZROXNBKJAOKB-GFVHOAGBSA-N
Size and count: 10 mg, 90 sprays per bottle
Research designation: Research Use Only

Counterion form, concentration, purity and storage details are not stated here. Each lot’s own paperwork carries them, and the contact page is the place to ask for it.

### What the Sequence Contains

Residue: Position: Count: Side chain

Glycine: 3, 4, 8: 3: Hydrogen only, no side chain
Alanine: 2, 6: 2: Methyl, nonpolar
Tryptophan: 1: 1: Indole ring, the only aromatic residue
Aspartic acid: 5: 1: Carboxylic acid
Serine: 7: 1: Hydroxyl
Glutamic acid: 9: 1: Carboxylic acid

The composition is short and polar. There is no cysteine, so no disulfide bond is possible, no methionine, and no lysine, arginine or histidine. The one basic site is the N-terminal amine, set against three acidic groups (the aspartic and glutamic acid side chains plus the C-terminal acid), so the free peptide carries a net negative charge near neutral pH. Tryptophan at position one is the only aromatic residue and the only strong absorber near 280 nm.

Each of these features shows up later in analytical data, which is why they are worth noting before reading any certificate.

## Research Focus & Mechanism Overview

### One Peptide, Several Names

Records for this peptide appear under DSIP, delta sleep-inducing peptide, Emideltide, delta sleep peptide and delta sleep factor. Chemical suppliers and compound databases use CAS 62568-57-4. The National Library of Medicine’s MeSH vocabulary files the same peptide under 69431-45-4, so a search on one number alone can miss records filed under the other.

Because the names are scattered, the sequence WAGGDASGE together with CAS 62568-57-4 is a firmer anchor than any single name. A structure-based identifier is harder still to confuse: the InChIKey is ZRZROXNBKJAOKB-GFVHOAGBSA-N and the PubChem CID is 68816.

### Look-Alikes Worth Ruling Out

Candidate: Difference from DSIP: Mass versus 848.8

(Asn5)-DSIP, CAS 80064-67-1: Asparagine in place of aspartic acid at position 5; a separately registered peptide: About 1 Da lower, near 847.8
C-terminal amide of the same nine residues: Carboxamide at the C-terminus instead of the free acid: About 1 Da lower, near 847.8
N-terminally acetylated nonapeptide: Acetyl cap on the N-terminal amine: About 42 Da higher
Longer peptide sold under the same label: More than nine residues, so a different formula altogether: Far from 848.8

Two of these rows share a shift. The amidated chain and the Asn5 analog both sit about 0.98 Da below the reference, and both work out to the same elemental formula, C35H49N11O14. A loose mass tolerance can pass either one as the real peptide, and even an exact mass cannot separate them from each other. Only fragment-ion sequencing, or a stated sequence backed by it, tells them apart.

### Checking a Name Against a Sequence

### What is the quickest test that a label means this peptide?

Count the residues and read the ends. The chain has nine residues, begins with tryptophan, ends with glutamic acid and has free termini. The formula C35H48N10O15 and an average mass of 848.8 g/mol should appear together with it.

### Why is the name alone not enough?

A name can be reused for a chain of a different length, and an analog can inherit the base name with one substitution. A listing that gives more than nine residues, or a mass well away from 848.8, describes a different compound whatever it is called.

### How should a literature search be built?

Search the CAS number and the sequence alongside each name variant. A search on delta sleep-inducing peptide alone will not return records indexed only under Emideltide or only under a registry number. Veracue provides no dosing, administration or usage guidance of any kind.

## Quality & Purity Standards

### Expected Mass Values for WAGGDASGE

Quantity: Value: Notes

Average molecular mass: 848.8 g/mol: Formula weight of C35H48N10O15
Monoisotopic neutral mass: 848.33 Da: Calculated from the most abundant isotopes
[M+H]+: 849.34: Singly protonated ion
[M+2H]2+: 425.17: Doubly protonated ion, m/z
[M-H]-: 847.32: Singly deprotonated ion

These numbers are calculated from the formula and are not measurements of any lot. Sodium and potassium adducts appear above the protonated ion. Since the only basic site is the N-terminal amine, a quoted m/z means little unless the polarity and charge state are stated next to it.

### Offsets worth recognizing in a mass report

Offset from 848.33: Likely meaning

About +42.01: Acetyl group on the N-terminus
About -0.98: C-terminal amide, or asparagine at position 5
About +15.99: One added oxygen, for example an oxidized tryptophan
About -57.02: Chain missing one glycine
About -71.04: Chain missing one alanine

### Chromatographic Purity and What It Leaves Open

Reverse-phase HPLC reports the share of detected signal that falls in the main peak under stated conditions. A nine-residue chain this polar typically elutes early, so the column, the gradient start and the detection wavelength all shape what the percentage means. The lone tryptophan adds a reading near 280 nm to the peptide-bond signal at lower wavelengths. A purity figure without those conditions cannot be compared with another laboratory’s figure.

HPLC does not identify the main peak, and it is silent on how much peptide a bottle holds by weight. Identity comes from the mass result and, where isomers matter, from fragment ions.

### Reading a Lot Certificate for DSIP Spray

- Lot number: it should match the number on the bottle label.
- Identity: a stated sequence or formula equal to WAGGDASGE and C35H48N10O15, with the observed mass printed beside the expected value and the tolerance applied.
- Purity: the percentage together with the column, gradient and detection wavelength behind it.
- Form: free peptide or a named salt, because a counterion changes the mass a report should show.
- Laboratory and test date.
- Quantity: the listing states 10 mg and 90 sprays per bottle. Any peptide content per spray or fill volume has to come from lot documentation, since none is stated here.

A certificate describes one lot and nothing more general. For paperwork on a specific lot, start at the certificate page, or write to the Veracue team through the contact page.

## Compliance Notice

### Research Use Only

DSIP Spray is supplied for laboratory research and analytical work only. Neither people nor animals are its intended end users, and it is not a drug, supplement, cosmetic or food. Veracue provides no dosing, administration or usage guidance of any kind, and nothing in the product description should be read as a claim about what the material does.

Purchasers are responsible for lawful use within an appropriate research setting. Sitewide policies are set out in the Medical Disclaimer and the Terms and Conditions.

## Questions and answers

### What does a bottle of DSIP Spray contain?

A single synthetic nonapeptide, WAGGDASGE, which is delta sleep-inducing peptide. The 10 mg size is supplied at 90 sprays per bottle for laboratory research use only.

### How many sprays are in each bottle?

Each 10 mg bottle is listed at 90 sprays per bottle. Peptide content per spray and fill volume are not stated on the listing and belong on lot documentation.

### What do the letters in WAGGDASGE stand for?

Reading from the N-terminus they are tryptophan, alanine, glycine, glycine, aspartic acid, alanine, serine, glycine and glutamic acid. That makes nine residues in total.

### Which formula and mass should a certificate show for DSIP?

C35H48N10O15, with an average mass of 848.8 g/mol and a calculated monoisotopic mass of 848.33 Da. The singly protonated ion should read near m/z 849.34.

### Which CAS number identifies DSIP?

CAS 62568-57-4 is the number chemical suppliers use, and the PubChem CID is 68816. MeSH indexing files the same peptide under 69431-45-4.

### What other names does this peptide go by?

Emideltide, delta sleep peptide and delta sleep factor all appear in records alongside DSIP and delta sleep-inducing peptide. The sequence and CAS number are more reliable than any one of these names.

### How does DSIP differ from (Asn5)-DSIP?

The analog, registered as CAS 80064-67-1, has asparagine where DSIP has aspartic acid at position 5. That makes it a separate compound with an average mass about 1 Da lower.

### Can mass spectrometry alone tell DSIP from its amidated form?

Not reliably. The amide sits about 0.98 Da below DSIP and shares its formula with the Asn5 analog, so a loose tolerance can blur it with the reference. Fragment-ion sequencing is what separates the isomers.

### Why is DSIP described as an acidic peptide?

It has aspartic and glutamic acid side chains plus a free C-terminal acid, against one basic site, the N-terminal amine. There is no lysine, arginine or histidine in the chain.

### What should I do if a listing calls a longer peptide DSIP?

Treat it as a different compound. The chain described here has exactly nine residues, and a different length means a different formula and mass.

### Does an HPLC purity percentage confirm identity?

No. It shows how much detected signal sits in the main peak under stated conditions, so it needs a matching mass result from the same lot to support identity.

### Are the termini of this peptide modified?

No. The N-terminus is a free amine and the C-terminus is a free carboxylic acid, with no acetyl cap and no amide.

### Is DSIP Spray sold for any use outside a laboratory?

No. It is supplied for laboratory research and analysis only, never for human or veterinary use.

### Is there a protocol or usage sheet for DSIP Spray?

No. Veracue provides no dosing, administration or usage guidance of any kind for this product.

More from Veracue Labs: https://veracuelabs.com/llms.txt