| Test | Method | Limit | Result |
|---|---|---|---|
| Purity | HPLC | ≥ 99.0% | 99.19% |
| Identity | Mass spectrometry | 848.8 ± 1.0 Da | 848.7 Da |
| Net content | Quantitative HPLC | ≥ 5 mg | 5.05 mg |
| Endotoxin | LAL assay | ≤ 0.5 EU/mg | 0.07 EU/mg |
| Sterility | Membrane filtration | No growth | No growth |
| Heavy metals | ICP-MS | ≤ 10 ppm total | 0.6 ppm |
| Moisture | Karl Fischer | ≤ 8.0% | 3.4% |
Nonapeptide neuropeptide
C35H48N10O15
848.8 Da · 9 residues
Neural · Nonapeptide neuropeptide
5 mg to 10 mg · 9 residues · 848.8 Da
Size$9.00/mg
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For in-vitro research use only. Not for human or animal use.
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GLP-2 TZ 10 mg01Verified test results
DSIP lot SA-DSP-2610 was tested Oct 8, 2026 at an independent laboratory before it shipped. Every value is printed against its limit, so a pass means something.
Certificate of analysis
99.19%
Purity by HPLC
Profile drawn from the reported purity
Purity by HPLC, identity by mass spectrometry, net content by quantitative HPLC, endotoxin by LAL, sterility by membrane filtration, heavy metals by ICP-MS and moisture by Karl Fischer. Report SA-DSP-2610-01, Oct 8, 2026. Open the lot record.
Open any lot's certificate. Your order ships from the current released lot, and its QR code opens this record.
99.19%
HPLC purity
Tested Oct 8, 2026 · 7/7 assays · sample
99.89%
HPLC purity
Tested Sep 10, 2026 · 7/7 assays · sample
02Verify your vial
Every vial label carries a QR code. Point your phone camera at it.
The code opens that lot's certificate with every assay value. No phone? Type the lot from your packing slip on Verify a lot.
Each signed certificate links to the lab's own verification page, so the report can be confirmed independently of us.
03Analytical identity
Studied in neuropeptide and sleep-architecture models in vitro.
| Compound | Nonapeptide neuropeptide |
|---|---|
| Formula | C35H48N10O15 |
| Molecular weight | 848.8 Da |
| Residues | 9 |
| CAS | 62568-57-4 |
| Form | Lyophilised powder, 5 mg, 10 mg |
| Storage | Sealed at -20 °C, away from light and moisture |
Sequence
Side-chain composition
Every heavy atom is placed from the sequence with ideal bond lengths and angles, so the connectivity is exact. The pose is idealised (an extended chain) and is not a measured conformation. Identity for each lot is confirmed on its certificate.
Structure viewer04In the lab
No DSIP gene, precursor protein or receptor has been isolated, so its mechanism remains unresolved. Laboratory studies report effects on mitochondrial respiration in brain tissue and NMDA receptor linked c-Fos control in hypothalamic neurons.
Compound
DSIPNonapeptide first isolated in 1977 (WAGGDASGE)Brain mitochondria
Endpoint studied
Raised phosphorylated (V3) respiration, respiratory control ratio and ADP phosphorylation rate.
Khvatova 2003 · PMID 12668217Hypothalamic PVN neurons
Endpoint studied
Fewer Fos-positive cells after stress; blocking NMDA receptors or protein synthesis prevented it.
Umriukhin 2012 · PMID 22094385Hippocampal tissue
Endpoint studied
Phosphorylated DSIP increased NREM and REM sleep under hypobaric hypoxia and raised hippocampal p-CREB.
Roy 2018 · PMID 30107169Pathways as reported in the cited laboratory studies. For in-vitro research use only.
05Research history
5 milestones, each linked to its PubMed record
Proceedings of the National Academy of Sciences of the United States of America
A peptide that enhances delta and spindle EEG activity is isolated, named DSIP and sequenced as Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu.
PubMed · PMID 265572Peptides
Casein kinase II phosphorylates DSIP in vitro using ATP or GTP; a Ser7-phosphorylated form had been detected naturally.
PubMed · PMID 1815223Peptides
In isolated brain mitochondria DSIP raised phosphorylated respiration and ADP phosphorylation, and blocked a hypoxia-induced drop.
PubMed · PMID 12668217Journal of Neurochemistry
A review notes that no DSIP gene, protein or receptor has been isolated and proposes a related DSIP-like peptide.
PubMed · PMID 16539679Neuroscience Letters
DSIP lowered stress-induced c-Fos in the hypothalamic paraventricular nucleus; blocking NMDA receptors or protein synthesis prevented it.
PubMed · PMID 22094385 LatestLaboratory research only, cited for research context. Not a claim about use in people.
06Questions
About DSIP, its certificate and your order.
Email [email protected], Monday to Friday. A person replies within one business day.
The current released lot, SA-DSP-2610. Scan the QR code on the vial label to open its certificate. The lot number is also on your packing slip, and the full certificate is here.
Every certificate is issued by an independent laboratory. Each lot has its own public record page with every assay value, and a link to verify the report on the lab's own site once the signed PDF is posted.
Vials are filled slightly over the labelled mass so that every vial meets it. Net content is measured on each lot and published as a number, not a pass.
Email [email protected] within 7 days with your order number and a photo and we will replace it.
Orders by 2 PM ET on a weekday ship the same day, with tracking emailed when the label prints.
No. It is sold strictly for in-vitro laboratory research and is not for human or animal use of any kind.
07Complete the box
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