123 In the index

DSIP DSIP

A peptide first discovered in rabbit brains and tested in small human sleep studies decades ago. Results were inconsistent across those studies, so it never became an approved sleep aid.

Also known as Delta sleep inducing peptide, Emideltide, DSIP nonapeptide, Emideltide [INN], DELTA SLEEP-INDUCING PEPTIDE, emideltida, Delta sleep-inducing peptide (rabbit), YN28Z5YZ73, 69431-45-4

Effects Sleep

Routes Subcutaneous

Legal status Research chemical

WADA Not listed

Molecular Structure of C₃₅H₄₈N₁₀O₁₅

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PubChem has no 3D conformer for this molecule, so this is the flat structure.

Chemistry

Formula: C35H48N10O15
Molar mass: 848.8
CAS: 62568-57-4
PubChem CID: 68816
IUPAC name: (2S)-2-[[2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[2-[[2-[[(2S)-2-[[(2S)-2-amino-3-(1H-indol-3-yl)propanoyl]amino]propanoyl]amino]acetyl]amino]acetyl]amino]-3-carboxypropanoyl]amino]propanoyl]amino]-3-hydroxypropanoyl]amino]acetyl]amino]pentanedioic acid
InChIKey: ZRZROXNBKJAOKB-GFVHOAGBSA-N

Reported dosing

User-reported

What has been reported in the literature and by users. This is a record of what is done, not a recommendation.

Typical dose 100 mcg/day

Reported range 100-200 mcg/day

Route Subcutaneous injection

Frequency Once daily, typically before bed

Duration Not established

Delta sleep-inducing peptide' — no completed modern human trials confirm sleep benefits; sold only as a research chemical.

Where this comes from Small older clinical studies (1970s-80s); user-reported/research-chemical vendor literature

There is no approved human dosing for this compound. The figures above are what users and vendors report, not what has been established as safe or effective. Treat them as a record of what is done, not as guidance.