Peptide Direct
GMP-Certified, ≥98% HPLC-Verified

IGF-1 LR3

Wholesale Long-Acting IGF-1 Analogue. IGF-1 LR3 (Long R3-IGF-1) is a synthetic 83-amino-acid analogue of human insulin-like growth factor 1 (IGF-1), modified with an arginine substitution at position 3 and a 13-amino-acid N-terminal extension to significantly reduce binding to IGF-binding proteins and extend its half-life. It is widely researched in performance, recovery, and tissue regeneration science.

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≥98% HPLC-VerifiedGMP & ISO 9001:2015 certifiedCOA with every batch
GMP · ISO · HACCPUK & Berlin manufacturingThird-party testedManufacturer direct since 2018

Compound specifications

IGF-1 LR3 at a glance

Compound NameIGF-1 LR3
Full NameLong R3-IGF-1 (Insulin-like Growth Factor 1, Long Arg3)
ClassificationSynthetic IGF-1 analogue
Peptide TypeRecombinant 83-amino-acid protein
CAS Number946870-92-4
Molecular FormulaC400H625N111O115S9
Molecular WeightApproximately 9117.6 g/mol
Structure83-amino-acid analogue of IGF-1, with an arginine substitution for glutamic acid at position 3 and an additional 13-amino-acid N-terminal extension (relative to the 70-amino-acid native IGF-1)
Purity≥98% (HPLC-verified, batch-by-batch)
FormatLyophilised peptide powder, multi-dose research vials
AppearanceWhite to off-white lyophilised powder prior to reconstitution
SolubilityReconstitute using bacteriostatic water or sterile laboratory-grade water

Ordering

Available Strengths

IGF-1 LR3 is available wholesale in the following strength:
IGF-1 LR3 1mg
Available for bulk ordering with flexible MOQs. Private label packaging and labelling is available for qualifying buyers — see our Private Label page for details. If you require additional strengths for your order, contact us to discuss availability.

Quality & documentation

Quality Assurance

Every batch of IGF-1 LR3 supplied by Peptide Direct meets the same standard as our full compound range:
  • GMP certified manufacturing conditions
  • ISO 9001:2015 certified quality management
  • HPLC purity verification to ≥98%, batch-by-batch
  • Certificate of Analysis supplied with every order
View our full QA standards →

Wholesale

Wholesale Information

IGF-1 LR3 is available through Peptide Direct for:
  • Wholesale peptide supply
  • International distribution
  • Commercial wellness partnerships
  • Private label solutions
View our wholesale terms →

Storage & handling

Storage Information

Store refrigerated at 2–8°C in a cool, dry environment away from direct light. For long-term storage prior to reconstitution, freezing conditions are recommended. Storage conditions are confirmed on the Certificate of Analysis supplied with each order.

Request a wholesale IGF-1 LR3 quote

Tell us the strength and quantity you need. We reply within 24 hours with tiered pricing and a current batch COA on request. COAs, pricing and samples available — B2B enquiries only.

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Frequently asked questions

What is IGF-1 LR3?
IGF-1 LR3 (Long R3-IGF-1) is a synthetic 83-amino-acid analogue of human insulin-like growth factor 1 (IGF-1), modified to significantly reduce binding to IGF-binding proteins and extend its half-life compared to native IGF-1. It is widely researched in performance, recovery, and tissue regeneration science.
What purity does Peptide Direct's IGF-1 LR3 meet?
All IGF-1 LR3 supplied by Peptide Direct is verified by HPLC analysis to a minimum purity of ≥98% on a batch-by-batch basis, with a Certificate of Analysis supplied on every order.
What strengths are available?
IGF-1 LR3 is available wholesale in 1mg, with flexible minimum order quantities for bulk buyers. Contact us if you require other strengths.
Can I get IGF-1 LR3 under my own brand?
Yes. Private label packaging, vials, and labelling are available for qualifying wholesale buyers. See our Private Label page for details.
How should IGF-1 LR3 be stored?
Store refrigerated at 2–8°C, away from direct light. For long-term storage, freezing conditions are recommended prior to reconstitution.
Is IGF-1 LR3 manufactured under GMP conditions?
Yes. All IGF-1 LR3 supplied by Peptide Direct is manufactured under GMP and ISO 9001:2015 certified conditions, the same standard applied across our full compound range.

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For research and laboratory purposes only. Not intended for human consumption, medical use, diagnosis, treatment, cure, or prevention of any disease. Products sold by Peptide Direct are intended exclusively for qualified research professionals and licensed institutions. Buyers are responsible for ensuring compliance with all applicable laws and regulations within their jurisdiction.