DSIP Peptide Australia: Buy DSIP Online or as a Nasal Spray

Shop DSIP Peptide in 5 mg, 10 mg and 10 mL Spray Formats With Lot Data

Name	DSIP (delta sleep-inducing peptide)
Sizes and prices (AUD)	5 mg vial at $39, 10 mg vial at $59, 10 mL nasal spray (10 mg) at $69
Sequence or structure	Trp-Ala-Gly-Gly-Asp-Ala-Ser-Gly-Glu, linear nonapeptide with free termini
Length	9 amino acids
Molecular formula	C35H48N10O15
Molar mass	848.8 g/mol
CAS number	62568-57-4
Form	Vials hold lyophilised powder under a flip-off cap. The spray holds a 1 mg/mL solution in a 10 mL pump bottle
Testing	Identity by mass spectrometry and purity by HPLC on vial and spray lots, with a certificate per lot
Contents	One vial (5 mg or 10 mg) without diluent, or one spray bottle holding 10 mg in 10 mL, with bacteriostatic water sold separately for the vials
Storage	Sealed vials at -20 °C, dark and dry. Spray and reconstituted vials at 2 to 8 °C
Availability	In stock
Use	Laboratory in vitro research only

Shop DSIP in the format your protocol calls for, powder for concentrations you set yourself or the spray for designs that follow the intranasal literature. All three formats are in stock in Australia, each with a lot certificate.

What Is DSIP Peptide?

DSIP, the acronym of delta sleep-inducing peptide, names a nine-amino-acid brain peptide that was first linked to deep, slow-wave sleep and is now studied mainly as an unsolved puzzle in neuroendocrinology. It is small, water soluble and easy to make. What it actually does, and through which target, is still argued over almost fifty years after it was named.

What "delta" refers to

Sleep researchers split non-REM sleep into stages, and the deepest stage is dominated by delta waves: large, slow electrical oscillations of roughly 0.5 to 4 cycles per second that an EEG picks up across the cortex. The peptide earned its name because, in the original rabbit experiments, it appeared to increase exactly this kind of activity. Replication was uneven, and the label has outlived the evidence that justified it.

Why DSIP is called a riddle

Most neuropeptides fit a familiar pattern: a gene encodes a larger precursor protein, enzymes cut the active peptide out of it, and the peptide acts on a receptor that can be cloned and studied. DSIP breaks all three parts of that pattern. No gene has been identified for it, no precursor protein has been confirmed, and no receptor has been isolated. A 2006 review in the Journal of Neurochemistry by Vladimir Kovalzon and Tatyana Strekalova summed up the situation in its title, calling DSIP a still unresolved riddle.

Despite that, antibodies raised against DSIP pick up reactive material in brain tissue and in blood. The catch is that antibody signals do not prove the presence of the exact nine-residue chain. A well-known example is the protein GILZ (gene TSC22D3), which carries the alias DSIPI (DSIP immunoreactor) simply because an anti-DSIP antibody recognised it. GILZ is a glucocorticoid-induced leucine zipper protein with an entirely different structure and function, and its old alias still confuses database searches.

That history is the most useful thing a lab can take from the literature. If your study measures endogenous DSIP, or tracks the synthetic peptide in tissue or medium, do not rely on an immunoassay alone. Confirm with LC-MS against a standard of known identity, ideally from the same lot you dosed the cultures with, so the WAGGDASGE mass and retention time can be matched directly. Without that step, a positive ELISA may be reporting a cross-reacting protein rather than the peptide you think you are measuring.

Buy DSIP Online in Australia, the Nonapeptide With an Unknown Receptor

Buy DSIP online in Australia and you receive the synthetic copy of a factor that Guido Schoenenberger and Marcel Monnier isolated in 1977 from the cerebral venous blood of rabbits kept in electrically induced sleep. Its name refers to the slow delta waves recorded in those animals. The peptide was then sequenced, and immunoreactive forms were later described in the hypothalamus, pituitary and plasma of several species.

Labs order it precisely because the mechanism is still open. Early EEG work in rabbits and rats gave mixed results, and later rodent studies moved on to pituitary release of luteinising hormone and corticotropin, somatostatin and stress responses. No dedicated receptor has been cloned, so every well-designed experiment adds data, and careful controls with well-characterised material matter more than usual. Shop it in our nootropic peptides and longevity peptides ranges, where it is listed as a research reagent, not a medicine.

Is DSIP Available in Australia? Formats, Background and Legal Position

DSIP is one of the few compounds we carry in three physical forms. The 5 mg and 10 mg vials hold a dry white cake under a teal flip-off cap, while the 10 mL bottle under a white pump actuator and silver collar contains the same 10 mg already in solution. The spray is also one of the three bottles packed together in our Selank, Semax and DSIP spray kit. The sequence itself dates from a PNAS paper of March 1977, in which Schoenenberger and Monnier described the nonapeptide, synthesised it alongside fragments and analogues, and reported that only the synthetic native chain enhanced delta and spindle EEG activity in rabbits. That work grew out of sleep-factor experiments Monnier had published in the 1960s.

Nearly half a century later, DSIP in Australia still has no clinical footing. It is absent from the Poisons Standard as of October 2026; a search of the October 2026 instrument for both DSIP and delta sleep-inducing peptide returned nothing, so it carries no schedule. Absence from the schedules does not turn a peptide into an approved therapeutic good, and the TGA requires inclusion on the Australian Register of Therapeutic Goods before any peptide is supplied for a therapeutic purpose. In practice, DSIP peptide Australia demand is met by research suppliers rather than pharmacies.

Buy DSIP Australia stock from AminoBlend in whichever format your protocol needs, vials or the DSIP nasal spray, all held locally as research reagents for laboratory use. Orders are open to adults 18 and over only, and none of the three formats is for human or veterinary use. The storage guide for peptides in solution is worth reading before a spray bottle is opened.

Order DSIP Peptide for Sale by Vial Size or as a Nasal Spray

Order the 5 mg vial at $39, or $7.80 per milligram, for a pilot or method development, since it is the easiest fill to use up once dissolved. The 10 mg vial at $59 brings the cost down to $5.90 per milligram for established protocols. Both are lyophilised and need a diluent.

The 10 mL nasal spray at $69 holds the same 10 mg, pre-dissolved at a fixed 1 mg/mL under a pump actuator, so the extra $10 over the 10 mg vial pays for the ready solution and bottle rather than more peptide. It suits intranasal-route designs but cannot be adjusted in strength. Buy several units together to keep a study on one lot wherever stock allows and one certificate. DSIP sales are limited to adults 18 and over.

Buy DSIP With Structure, Purity and the Lot Certificate Checked

DSIP carries a tryptophan at position 1, two acidic residues and a C-terminal glutamate, so it is negatively charged at neutral pH and dissolves readily. The tryptophan absorbs strongly in the ultraviolet and gives a clean HPLC signal. Its glycine-rich middle is flexible, and the free N-terminus is exposed to aminopeptidases, which is why the peptide breaks down quickly in biological media.

Shop knowing what the certificate should show, a measured mass matching 848.8 g/mol and a single main HPLC peak, with purity reported for that lot. Vial lots and spray lots each have their own document in the COA library, and the spray certificate reports the same identity and purity tests, run on the solution lot itself.

Order DSIP Online for Delivery Near You and Use Solutions Promptly

DSIP is not sold in any shop. AminoBlend works online only and ships tracked parcels from Australian stock to every state, with same-day dispatch for orders paid before 3pm on business days. Timing by region is set out on the delivery page.

For a vial, let it warm to room temperature, run the diluent gently down the glass and swirl, and the charged residues help it dissolve fast. Adding 2.5 mL of bacteriostatic water to the 5 mg vial gives 2 mg/mL, and the peptide calculator handles other volumes. The spray bottle is ready as delivered.

Keep sealed vials at -20 °C away from light. Because DSIP degrades fairly quickly in solution, refrigerate mixed vials at 2 to 8 °C, divide them into aliquots and use them promptly, and put the spray bottle in the fridge once it arrives. Thaw only the aliquot needed for the day's work, since repeated temperature swings speed up the loss of intact peptide.

Other Names for DSIP

DSIP stands for delta sleep-inducing peptide, sometimes written without the hyphen as delta sleep inducing peptide. Sequence databases list it as WAGGDASGE, and the full chemical name begins L-tryptophyl-L-alanyl-glycyl-glycyl. A phosphorylated form, with a phosphate on the serine at position 7, appears in older literature. Order under any of these names and the molecule is the 848.8 g/mol chain identified by CAS 62568-57-4.

Order DSIP or Selank Depending on Your Readout

DSIP is a nine-residue chain of uncertain origin, studied in sleep architecture and neuroendocrine models. Selank is a seven-residue analogue of tuftsin, studied in GABA-related gene expression and anxiety-like behaviour models in rodents. Choose DSIP for sleep and stress-axis questions and Selank for GABA and cytokine readouts.

Shop both as a vial or a 10 mL spray, or take the Spray Research Kit at $179, which bundles the DSIP, Selank and Semax sprays for intranasal work. Labs running pineal rhythm designs often add Epitalon as well, since its melatonin studies overlap with sleep models.