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VIP: molecular data, studies & sources

VIP is catalogued here as a research compound. This profile brings together the molecular source record, selected indexed publications and available supplier comparisons. Evidence for a named substance does not authenticate a commercial product.

Compiled by PeptideTech Editors · Sources checked · Selected bibliography, not a systematic review

Molecular formula, weight & structure

Molecular formula (MF)
C147H237N43O43S
Molecular weight (MW)
3326.8 g/mol
PubChem compound ID
53314964
Record title
Vasoactive intestinal peptide

Values describe the selected PubChem molecular entity. Counterions, salt forms, hydration and sequence changes can alter the supplied material. Confirm the exact identity against the supplier specification.

Source: PubChem CID 53314964 · retrieved 2026-09-21

2D molecular structure for VIP, PubChem CID 53314964
2D depiction from PubChem. Open to inspect the full image. This drawing represents the selected record, not a vendor batch test.
Chemical identifiers and source data
IUPAC name
(2S)-4-amino-2-[[(2S)-2-[[(2S,3S)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-6-amino-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-5-amino-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-amino-3-(1H-imidazol-4-yl)propanoyl]amino]-3-hydroxypropanoyl]amino]-3-carboxypropanoyl]amino]propanoyl]amino]-3-methylbutanoyl]amino]-3-phenylpropanoyl]amino]-3-hydroxybutanoyl]amino]-3-carboxypropanoyl]amino]-4-oxobutanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-3-hydroxybutanoyl]amino]-5-carbamimidamidopentanoyl]amino]-4-methylpentanoyl]amino]-5-carbamimidamidopentanoyl]amino]hexanoyl]amino]-5-oxopentanoyl]amino]-4-methylsulfanylbutanoyl]amino]propanoyl]amino]-3-methylbutanoyl]amino]hexanoyl]amino]hexanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-methylpentanoyl]amino]-4-oxobutanoyl]amino]-3-hydroxypropanoyl]amino]-3-methylpentanoyl]amino]-4-methylpentanoyl]amino]-4-oxobutanoic acid
InChIKey
VBUWHHLIZKOSMS-RIWXPGAOSA-N
SMILES
CC[C@H](C)[C@@H](C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(=O)N)C(=O)O)NC(=O)[C@H](CO)NC(=O)[C@H](CC(=O)N)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CC1=CC=C(C=C1)O)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCCCN)NC(=O)[C@H](C(C)C)NC(=O)[C@H](C)NC(=O)[C@H](CCSC)NC(=O)[C@H](CCC(=O)N)NC(=O)[C@H](CCCCN)NC(=O)[C@H](CCCNC(=N)N)NC(=O)[C@H](CC(C)C)NC(=O)[C@H](CCCNC(=N)N)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CC2=CC=C(C=C2)O)NC(=O)[C@H](CC(=O)N)NC(=O)[C@H](CC(=O)O)NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CC3=CC=CC=C3)NC(=O)[C@H](C(C)C)NC(=O)[C@H](C)NC(=O)[C@H](CC(=O)O)NC(=O)[C@H](CO)NC(=O)[C@H](CC4=CNC=N4)N
Machine-readable PubChem source

Identifiers & sequence

PubChem CID
53314964
CAS Registry Number
37221-79-7via ChemIDplus, FDA GSRS
FDA UNII
6J2WVD66KR
InChIKey
VBUWHHLIZKOSMS-RIWXPGAOSA-N

Peptide sequence · 28 residues (one-letter code; X marks a residue without a one-letter code)

HSDAVFTDNYTRLRKQMAVKKYLNSILN

Condensed notation with terminal groups and non-standard residues

H-His-Ser-Asp-Ala-Val-Phe-Thr-Asp-Asn-Tyr-Thr-Arg-Leu-Arg-Lys-Gln-Met-Ala-Val-Lys-Lys-Tyr-Leu-Asn-Ser-Ile-Leu-Asn-OH

Source: PubChem Biologic Line Notation. A reference sequence for the record, not an analysis of a supplied batch.

CAS numbers are published only from ChemIDplus, EPA DSSTox or the FDA Global Substance Registration System; UNII codes are confirmed in FDA GSRS by structure, sequence or exact name. Checked 2026-10-07.

Calculated molecular descriptors
Monoisotopic (exact) mass3324.7401 Da
Heavy atoms234
Hydrogen-bond donors51
Hydrogen-bond acceptors48
Rotatable bonds113
Topological polar surface area1447.9 Ų
Calculated logP (Crippen)-14.62
Rings4
Stereocenters31
Formal charge0

Computed with RDKit from the published SMILES (Crippen logP, topological polar surface area). Calculated descriptors are not measured properties of a supplied batch.

Registered clinical trials

Studies registered on ClinicalTrials.gov that list Vasoactive intestinal peptide as an intervention. Studies that only measure the molecule as a biomarker, or use it only as a comparator or background arm for another drug, are excluded. A registration describes a planned or completed protocol; it does not report a result. Active studies are listed first.

7 registered studies matched.

By highest phase
Phase 1 · 1Not applicable · 6
By registry status
Completed · 7
StudyPhase · statusConditionsSponsor · size
The Effects of a Long-lasting Infusion of Vasoactive Intestinal Peptide (VIP) in Episodic Migraine PatientsNCT04260035 · start 2020-05-19 · primary completion 2020-09-15Not applicableCompletedMigraine · Pain · Neurologic Manifestations · Signs and Symptoms · Brain Diseases · Central Nervous System DiseasesDanish Headache Center21 participants
The Effects of a Long-lasting Infusion of Vasoactive Intestinal Peptide (VIP) on Headache, Cranial Hemodynamic and Autonomic Symptoms in Healthy VolunteersNCT03989817 · start 2019-06-14 · primary completion 2020-06-30Not applicableCompletedHeadache DisordersDanish Headache Center12 participants
Effect of PACAP38/VIP on Migraineurs Measured by Magnetic ResonanceNCT01471990 · start 2011-05 · primary completion 2012-06Not applicableCompletedMigraine Without AuraGlostrup University Hospital, Copenhagen24 participants
Hemodynamic and Headache-Inducing Effect of Intravenous Vasoactive Intestinal Peptide in MigraineursNCT00272896 · start 2004-10Not applicableCompletedHeadache · Migraine · Vasoactive Intestinal Peptide · Ultrasonography, Doppler, TranscranialDanish Headache Center12 participants
Experimental Headache Induced by Vasoactive Intestinal PolypeptideNCT00255320 · start 2003-12Not applicableCompletedHealthy Volunteers, Headache, Migraine, Hemodynamics, VIP, SPECT, UltrasoundDanish Headache Center12 participants
Vasoactive Intestinal Peptide in COPDNCT00464932 · start 2003-06Not applicableCompletedCOPD · Pulmonary HypertensionMedical University of Vienna34 participants
Phase I Study of Vasoactive Intestinal Peptide in Patients With Acute Respiratory Distress Syndrome and SepsisNCT00004494 · start 1998-09Phase 1CompletedSepsis · Respiratory Distress Syndrome · Respiratory Distress Syndrome, AdultStony Brook University18 participants

Registry check 2026-10-09 · Run this search on ClinicalTrials.gov

Human intervention studies

Selected studies in which participants received Vasoactive intestinal peptide, with their indexed or reviewed study type. Check the original article for the formulation, population and controls. Studies that only measured the molecule, or used it as a comparator, are listed separately below and are not counted as intervention studies.

  1. Human study · PubMed trial index Compound given to participants

    A clinical trial of intracavernous vasoactive intestinal peptide to induce penile erection.

    Roy JB, Petrone RL, Said SI et al. · The Journal of urology · 1990

    PMID 2405186 · DOI: 10.1016/s0022-5347(17)39939-1

Human studies that measured Vasoactive intestinal peptide or used it as a comparator

Indexed as human studies in PubMed, but participants were not given Vasoactive intestinal peptide as the studied intervention, or the record does not establish that they were. They describe measurements or comparisons, not the effect of administering the compound.

  1. Human study · PubMed trial index Endogenous level measured · not given

    Role of tear vasoactive intestinal peptide on dry eyes after laser keratorefractive surgery.

    Kang Y, Hu Q, Li X et al. · BMC ophthalmology · 2023

    PMID 37081425 · DOI: 10.1186/s12886-023-02857-w

Preclinical research, reviews & other publications

Animal studies, laboratory experiments, reviews and other indexed papers answer different questions. A review is secondary evidence; a case report does not estimate how often an outcome occurs.

  1. Review · secondary evidence

    Vasoactive intestinal peptide.

    Said SI · Journal of endocrinological investigation · 1986

    PMID 2872248 · DOI: 10.1007/BF03348097

  2. Review · secondary evidence

    Vasoactive Intestinal Peptide-Secreting Tumors: A Review.

    Siddappa PK, Vege SS · Pancreas · 2019

    PMID 31609932 · DOI: 10.1097/MPA.0000000000001402

  3. Review · secondary evidence

    Vasoactive intestinal peptide secreting tumour: An overview.

    Una Cidon E · World journal of gastrointestinal oncology · 2022

    PMID 35582098 · DOI: 10.4251/wjgo.v14.i4.808

VIP supplier sources

Scientific sources describe molecules and experiments. The commercial links below identify recorded supplier packages. A publication or chemical database entry does not verify the seller, purity, sterility or contents of a lot. Some links are affiliate links; see our disclosure.

VIP for sale: compare prices, sizes and forms from every tracked supplier →

SupplierRecorded packagesExample source listing
Amino ClubUSD10mg Vial1 recorded offers10mg Vial · $49.99Stale observation · Checked Oct 14, 2026Supplier listing, VIP 10mg Vial, Amino Club, opens in a new tab
Amino USAUSD5mg Vial1 recorded offers5mg Vial · $48.00Checked Nov 6, 2026Supplier listing, VIP 5mg Vial, Amino USA, opens in a new tab
Cenexa LabsUSD5mg Vial1 recorded offers5mg Vial · $64.99Checked Nov 6, 2026Supplier listing, VIP 5mg Vial, Cenexa Labs, opens in a new tab
Blank PeptidesUSD10mg Vial1 recorded offers10mg Vial · $75.00Stale observation · Checked Sep 30, 2026Supplier listing, VIP 10mg Vial, Blank Peptides, opens in a new tab
LA PeptidesUSD10mg Vial1 recorded offers10mg Vial · $59.99Checked Nov 3, 2026Supplier listing, VIP 10mg Vial, LA Peptides, opens in a new tab

Reference sources & further reading

The citations above link directly to publication records. Encyclopedia links are background reading and are not used to establish clinical effectiveness.

Search for additional research

These links run searches; their results have not been individually reviewed and can include unrelated compounds.

Research information is not a dosing guide or a recommendation for personal use. Study findings are specific to the formulation, population and methods tested. Read our source and correction policy.

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