• Skip to primary navigation
  • Skip to main content
  • Skip to footer

LKT Labs

Biochemicals for Life Science Research

  • Products
    • New Products
    • Cancer Biology
    • Cardiovascular
    • Endocrine Signaling and Immunology
    • Metabolic and GI Pathology
    • Microbiology
    • Natural Products
    • Neuroscience
    • Peptides
    • Pharmaceutical Impurities and Derivatives
    • Stem Cell Modulators
  • Services
    • Custom Synthesis
    • Natural Product Isolation
    • Analytical Services
  • Int’l Distributors
  • Support
    • About LKT Labs
    • General Inquiry
    • Bulk Quote Request
    • Document Request
    • Technical Support
    • Catalog Request
    • Product Flyers
  • Contact Us
  • Cart
  • Login / Register
Rigin

Rigin

Product ID R3224
Cas No. 77727-17-4
Purity ≥95%
Product Unit SizeCostQuantityStock
5 mg $98.00 In stock
10 mg $167.00 In stock
25 mg $295.00 In stock
Bulk Quote

Quicklinks

  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Description
  • Product Info
  • Shipping and Storage
  • Downloads
  • References
  • Custom Order

Description

Rigin is a tuftsin-like tetrapeptide with the sequence G-Q-P-R that is derived from IgG. Rigin exhibits immunomodulatory activity, stimulating phagocytosis, activating polymorphonuclear lymphocytes and macrophages, and protecting against stress-induced damage.

Product Info

Cas No.

77727-17-4

Purity

≥95%

Formula

C18H32N8O6

Formula Wt.

456.51

IUPAC Name

(2S)-2-[[(2S)-1-[(2S)-5-amino-2-[(2-aminoacetyl)amino]-5-oxopentanoyl]pyrrolidine-2-carbonyl]amino]-5-(diaminomethylideneamino)pentanoic acid

Synonym

G-Q-P-R, GQPR

Solubility

Soluble in water.

Shipping and Storage

Store Temp

-20°C

Ship Temp

Ambient

Downloads

Info Sheet

R3224 Info Sheet PDF

References

Dutta RC, Puri A, Anand N. Immunomodulatory potential of hydrophobic analogs of Rigin and their role in providing protection against Plasmodium berghei infection in mice. Int Immunopharmacol. 2001 May;1(5):843-55. PMID: 11379040.

Klusha VE, Mutsenietse RK, Svirskis ShV, et al. Neuroimmunoregulatory properties of short protein fragments in rats exposed to immobilization stress. Biull Eksp Biol Med. 1987 Aug;104(8):186-7. PMID: 2887222.

Veretennikova NI, Chipens GI, Nikiforovich GV, et al. Rigin, another phagocytosis-stimulating tetrapeptide isolated from human IgG. Confirmations of a hypothesis. Int J Pept Protein Res. 1981 Apr;17(4):430-5. PMID: 7309346.

Custom Order

  • Size of single unit expressed as number (e.g. '500' in the case of 500 mg)
  • Total quantity of unit size desired (e.g. '10' in the case of 10 x 500 mg). If only one unit is desired, you may leave this blank.
  • This field is for validation purposes and should be left unchanged.

Related Products

  • G8850

    GW-5074

    c-Raf inhibitor.

    ≥98%
  • T8000

    Tubacin

    HDAC6 inhibitor.

    ≥96%
  • S8046

    R-Sulforaphane, High Purity

    Naturally occuring isothiocyanate found in broc...

    ≥98%
  • S1605

    Secretin, human

    Endogenous peptide hormone, involved in water h...

    ≥95%
  • E6233

    (−)-Epigallocatechin

    Flavanol originally found in Camilla (green tea...

    ≥98%
  • S1061

    Small Cardioactive Peptide B

    Peptide found in molluscs, cardiomodulator.

    ≥95%
  • S0244

    Salsalate

    Salicylic acid prodrug, NSAID; weak COX-1/2 inh...

    ≥95%
  • A7461

    Asperosaponin VI

    Triterpene saponin found in Dipsacus asper.

    ≥98%
  • N1868

    Neratinib

    EGFR inhibitor.

    ≥98%
  • G3254

    10-Gingerol

    Phenol found in Zingiber; 5-HT3 antagonist.

    ≥99%
  • P200000

    PF-3845

    FAAH inhibitor.

    ≥98%
  • G2968

    Growth Hormone Releasing Peptide 2

    Endogenous peptide hormone, involved in growth ...

    ≥95%
  • P2002

    PF-04691502 Dihydrate

    PI3K and mTOR inhibitor.

    ≥98%
  • A5001

    Aminopterin

    Folic acid analog, derivative of pterin; dihydr...

    ≥98%
  • H9812

    5-Hydroxytryptophol

    Serotonin/melatonin analog found in various pla...

    ≥98%
  • M3196

    MHY-1485

    mTOR activator.

    ≥98%
  • C2956

    Cholecalciferol

    Endogenous vitamin D prodrug.

    ≥98%
  • A5272

    Angiotensin, dog/rat

    Peptide, derivative of AT I, cleavage product o...

    ≥95%
  • P014442

    Palbociclib

    CDK4/6 inhibitor.

    ≥98%
  • C6132

    CPI-203

    Triazolothienodiazepine, JQ-1 derivative; BRD i...

    ≥98%

Footer

  • Contact Us
  • About Us
  • Site Map
  • Terms and Conditions
LKT Laboratories, Inc.
545 Phalen Blvd.
St. Paul MN, 55130

Ph: (888)-558-5227
Fax: (888)-558-7329

©2026 LKT Laboratories, All Rights Reserved - Products for research use only