SKU LUM-DSIP-5 · C₃₅H₄₈N₁₀O₁₅ · 848.83 g/mol · CAS 62568-57-4
Delta-sleep-inducing peptide — a 9-residue endogenous neuropeptide isolated from cerebral venous blood during slow-wave sleep.
Purity (HPLC)
≥ 99.05%
Net peptide
5.00 mg ± 2%
Endotoxin
< 0.5 EU/mg
Format
Lyophilized vial
Storage
−20 °C, desiccated
Shelf life
24 months from MFG
$50CAD/ 10 mg vial
In stock · Lot LM-2735
Qty
Add $300 for Free shipping
HPLC + MS verified per lot
~4 days to your door
COA bundled with shipment
Lot samples retained 5 years
Overview
Delta-Sleep-Inducing Peptide (DSIP) is a 9-residue endogenous neuropeptide originally isolated from cerebral venous blood of sleeping rabbits. Despite the name, its primary research interest extends beyond sleep architecture into stress-response, opioid-receptor modulation, and circadian-axis pharmacology.
Each vial is lyophilized from acetate buffer, sealed under nitrogen, and shipped ~4 days from our lab.
Sold for laboratory research only. This material is not a drug, food, or cosmetic and is not intended for diagnostic, therapeutic, or recreational use.
Identity
Parameter
Value
Sequence
Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu
Molecular formula
C₃₅H₄₈N₁₀O₁₅
Molecular weight
848.83 g/mol
CAS number
62568-57-4
Length
9 residues
Quality
Test
Specification
HPLC purity
99.06%
Mass confirmation
ESI-MS within 0.5 Da
Net peptide content
≥ 80% by AAA
Endotoxin
< 0.5 EU/mg (LAL)
Bioburden
< 10 CFU/g
Residual TFA
< 1.0%
Lot LM-2735
Manufactured 04 Mar 2026 · Released 11 Mar 2026 · Tested by Lumera QC, Canada. Retain samples held under storage spec for five years from release date.
Verification
Method
Result
RP-HPLC at 220 nm
99.06% main peak
ESI-MS (positive)
848.8 Da (theor. 848.83)
Amino acid analysis
82.1% net peptide
LAL endotoxin
< 0.05 EU/mg
Karl Fischer (water)
2.8% w/w
Reconstitution
Allow vial to reach room temperature before opening (≥ 20 minutes). Reconstitute with 1.0–2.5 mL of sterile bacteriostatic water (0.9% benzyl alcohol). Inject solvent slowly down the inner wall of the vial; do not direct stream onto the lyophilized cake.
Swirl gently for 30 seconds. Do not vortex. Allow to dissolve for 5 minutes; clarity should be complete with no visible particulates.
Storage after reconstitution
Reconstituted solution is stable for 28 days at 2–8 °C in original vial. For longer storage, aliquot into low-binding tubes and hold at −80 °C; avoid repeated freeze-thaw cycles. Discard if turbidity, color change, or particulate matter is observed.
Selected references
Schoenenberger GA, Monnier M. Characterization of a delta-electroencephalogram (sleep)-inducing peptide. Proc Natl Acad Sci USA. 1977;74(3):1282–1286.
Graf MV, Kastin AJ. Delta-sleep-inducing peptide (DSIP): a review. Neurosci Biobehav Rev. 1984;8(1):83–93.
Khvatova EM et al. DSIP and stress: actions on neurochemical and metabolic parameters. Stress. 2003;6(1):79–86.
