DSIP is a synthetic nonapeptide with the sequence Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu (WAGGDASGE), built from L-amino acids with both ends left free. Its formula is C35H48N10O15, its average mass is 848.8 g/mol and its CAS number is 62568-57-4. The same molecule is indexed as Emideltide, and it should not be confused with acetylated or amidated versions, which carry different masses. The 10 mg vial is provided for research use in the laboratory only.
Ask for the analytical documentation of any lot.
HPLC is the method used to measure purity
Ask for the report for a specific lot through the contact page
Supplied for laboratory research use only
Mass spectrometry is the method used to confirm identity
DSIP, short for delta sleep-inducing peptide, is a synthetic nonapeptide with the sequence WAGGDASGE (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu). Its formula is C35H48N10O15 and its average molecular weight is 848.8 g/mol. It is also indexed as Emideltide. Veracue supplies it for laboratory research only.
Buyers usually check four things first: the sequence, the mass, the CAS number and the database identifier. The same values should appear on the lot certificate you receive.
| Product name | DSIP (also indexed as Emideltide) |
| Sequence | WAGGDASGE (Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu) |
| Length | 9 amino acids (nonapeptide) |
| Termini | Free N-terminus and free C-terminus; not acetylated, not amidated |
| Stereochemistry | L-amino acids |
| Molecular formula | C35H48N10O15 |
| Molecular weight (average) | 848.8 g/mol |
| CAS Registry Number | 62568-57-4 |
| Additional registry number | 69431-45-4 (appears in NLM MeSH indexing for the same peptide) |
| PubChem CID | 68816 |
| Research designation | Research Use Only |
These values describe the free peptide as a reference structure. Salt or counterion form, physical form, purity, lot results and storage conditions are reported on each lot’s documentation and can be requested through the contact page.
WAGGDASGE is nine residues: tryptophan, alanine, glycine, glycine, aspartic acid, alanine, serine, glycine and glutamic acid. Both ends of the chain are free, so the peptide is neither acetylated at the N-terminus nor amidated at the C-terminus.
The sequence matters when you compare supplier documents. A record that shows a different length, residue order or terminal modification describes a different compound.
Chemical catalogs almost always use CAS 62568-57-4. NLM MeSH indexing records for the same peptide carry 69431-45-4 instead. Both point at the same peptide, so the second number on an indexing record is not a warning sign. An unexplained third number on a certificate is worth resolving before the vial goes into an assay.
Yes. Emideltide is the nonproprietary name used in records for the same molecule. A shared name does not by itself confirm salt form, purity or isomeric composition, so check the certificate for those.
| Field | Value |
|---|---|
| Other names | Emideltide; DSIP nonapeptide |
| Sequence (1-letter) | WAGGDASGE |
| Sequence (3-letter) | Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu |
| Molecular formula | C35H48N10O15 |
| Average molecular weight | 848.8 g/mol |
| CAS number | 62568-57-4 |
| PubChem CID | 68816 |
| InChIKey | ZRZROXNBKJAOKB-GFVHOAGBSA-N |
Not much is settled. No receptor, precursor protein or gene for DSIP has been identified, and the mechanism is not established. Laboratory-model work has reported indirect interactions with several signaling systems, which describes pathway activity in those models and not a defined mechanism.
Ask four questions: which system was used, which comparator, which endpoint and which chemical form. Many papers do not say whether they used the free peptide or a salt, so they cannot be matched to a specific research lot. Veracue does not provide dosing, administration or usage guidance of any kind.
A certificate of analysis answers narrow questions well and broad ones not at all. It documents one lot, so read it as a set of linked facts. Certificates vary between laboratories and testing programs, so treat this as what a COA may include rather than a fixed checklist.
| COA item | What it helps establish |
|---|---|
| Lot number | Which production run the results describe. It should match the vial in your hand. |
| Product identity | The compound name, which should agree with the formula and weight shown. |
| Sequence or molecular identity | Whether the record ties the material to WAGGDASGE. |
| Purity | The reported chromatographic purity value for that lot. |
| HPLC method | The method and detection conditions behind the purity value. |
| Mass spectrometry result | Whether the measured mass fits the DSIP reference mass. |
| Molecular form | Free peptide, acetate or another counterion. Acetate content shifts the mass on the COA. |
| Testing laboratory and date | Who performed the analysis and how recent it is. |
A generic certificate for an unnamed batch documents nothing about your material. Any field above depends on the lot’s own documentation, and Veracue confirms a field only when the lot certificate reports it. The certificate page explains how to request lot documentation.
HPLC separates the peptide from related substances and reports chromatographic purity as a percentage of peak area. It shows how much of the detected material is the main peak. It does not identify that peak, and it does not give the net peptide content of the vial, because a peptide vial can also hold counter-ions, residual solvent and water.
Mass spectrometry supplies the identity half. An observed mass consistent with the expected mass supports the assignment, and support is not proof. Mass cannot separate molecules with identical elemental composition.
DSIP has an aspartic acid at position five. Aspartyl residues in peptides are known to isomerize through a succinimide intermediate, giving isoaspartyl forms with the same elemental composition and therefore the same mass. Mass spectrometry alone will not separate those forms, and chromatography resolves them only with some methods. If isomeric composition matters to your work, ask which method was used and whether it was validated to resolve those peaks.
Peptide-related impurities from incomplete coupling, truncation or side reactions during synthesis are also possible, which is another reason to read the purity value together with its method.
Ask the Veracue team about available documentation for a specific lot, or review the certificate library.
DSIP is supplied for laboratory research, scientific investigation and analytical characterization only. It is not intended for human or veterinary use, or for ingestion, injection, inhalation or any form of administration. It is not a drug, supplement, cosmetic or food. This page contains no dosing, administration or usage guidance of any kind. See the Medical Disclaimer and the Terms and Conditions for sitewide policies.
RESEARCH PEPTIDE
Semax/Selank is two peptides in one 10/10 mg vial, so a COA should confirm both (CAS 80714-61-0 and 129954-34-3). Research use only.
RESEARCH PEPTIDE
Selank (TKPRPGP) is a seven-residue tuftsin analog of about 751 g/mol. Compare it with Semax and read the COA. 10 mg vial available, research use only.
RESEARCH PEPTIDE
Semax (MEHFPGP) is a seven-residue peptide: ACTH(4-7) plus a Pro-Gly-Pro tail (CAS 80714-61-0). See mass and COA tips. 10 and 30 mg, research use only.
