- OP Labs formerly Oxford Peptides.
- Batch HPLC tested at 99%+ purity.
- Store frozen long term or in fridge when ready to be used.
- Sold for research purposes only.
- Contact us for Wholesale Orders.
Download COA here: DSIP COA.pdf
Please note if you have a different Batch ID please contact us for the latest COA.
DSIP – Technical Information
Peptide Name:
Delta Sleep-Inducing Peptide (DSIP)
Synonyms:
DSIP, Delta sleep peptide, Sleep-promoting peptide
Peptide Sequence (Amino Acid):
Trp–Ala–Gly–Gly–Asp–Ala–Ser–Gly–Glu
Molecular Formula:
C35H48N10O15
Molecular Weight:
848.82 g/mol
CAS Number:
62568-57-4
PubChem CID:
16132331
IUPAC Name:
L-tryptophyl-L-alanyl-glycyl-glycyl-L-aspartyl-L-alanyl-L-seryl-glycyl-L-glutamic acid
Structure Representation:
SMILES:
C1=CC=C2C(=C1)C(=CN2)CC(C(=O)N[C@@H](C)C(=O)NCC(=O)NCC(=O)N[C@@H](CC(=O)O)C(=O)N[C@@H](C)C(=O)N[C@@H](CO)C(=O)NCC(=O)O)N
Peptide Classification:
Naturally occurring nonapeptide; classified as a neuropeptide in various animal models
Solubility:
Soluble in water, dilute acetic acid, and phosphate-buffered saline (PBS)
References
- Schoenen, J., & Mairesse, J. (1985). “Delta sleep-inducing peptide (DSIP): A review.” Peptides, 6(3), 447–456. https://doi.org/10.1016/0196-9781(85)90112-2
- Graf, M. V., Kastin, A. J., & Coy, D. H. (1984). “Stability of delta sleep-inducing peptide (DSIP) and analogs in rat tissues and plasma.” Peptides, 5(3), 419–423. https://doi.org/10.1016/0196-9781(84)90109-1
- Monnier, D., & Mertz, H. (1980). “DSIP: Biochemical and physiological effects.” Biomedicine & Pharmacotherapy, 34(7), 294–299. https://pubmed.ncbi.nlm.nih.gov/6254816/
- Chagnaud, J. L., & Claustrat, B. (1984). “Effects of delta sleep-inducing peptide on melatonin secretion in the pineal gland of rats.” Neuroscience Letters, 45(1), 87–92. https://doi.org/10.1016/0304-3940(84)90220-4
Keywords: DSIP, Delta Sleep Inducing Peptide, Deep Sleep Inducing Peptide.










Lucy –
Love the results.
Michelle S. –
Fast delivery, fantastic product.
NICOLA D. –
Speedy delivery, great product.
Elisha –
Great design and quality.
Amy –
DoesnÕt work as advertised.
Sarah –
Does the trick.
Emma –
I use it all the time.
Leonie S. –
Delivery was super quick.
Glenn –
Don’t buy. I think they’re not real. Dodgy packaging. No contact number or email and the chat bot doesn’t respond.
Mate Janos Andrasi –
Absolutely amazing product. An extra 0.5hr of deep sleep / night on 0.5mg
Jake Austin –
Have only been taking DSIP for a few days but I feel my sleep is slightly better but it’s one of those peptides you need to allow a little time to start working. Perfectly as described however. No issues with vials or reconstituting.
Steven Jones –
Neil Jones –
The product arrived very quickly and I’ve started using it yesterday. Early days on how effective it is, but I will be a returning customer!
Bradlaugh Culverwell –
Peter –
Great service, professional, I’ll review the product later.
Manjit B. –
Kevin C. –
Anonymous –
Anonymous –
Paul Russell –
Fantastic product ,very effective
C G. –
Does what it says… good sleeps.
Inese M. –
Great prices and fast shipping! Very happy customer!
Joseph T. –