Molecular Profile
What Is IGF-1 LR3?
- Type
- Synthetic IGF-1 analog
- CAS Number
- 143045-27-6
- Molecular Weight
- 9,117.60 g/mol
- Amino Acids
- 83
- Formula
- C400H625N111O115S9
- Sequence
- MFPAMPLSSL FVNGPRTLCG...
FOR RESEARCH USE ONLY. This compound is not FDA approved. All data presented is from clinical trials for educational reference.
8x tested · ISO 1702599%+ purityResearch use only
Growth Factor Analog Peptide
IGF-1 LR3
Long R3 IGF-1LR3-IGF-1Long Arginine 3-IGF-1CAS: 143045-27-6
An 83-amino acid synthetic analog of human insulin-like growth factor 1 with reduced binding protein affinity and extended half-life, studied for anabolic and tissue growth effects in preclinical research. Premium Research Peptide.
Mass
Quantity
1
$69.99$45.49
$69.99$45.49
1
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IGF-1 LR3$69.99$45.49
Verified Test Results
Every batch, independently verified.
Each batch is analyzed by an ISO/IEC 17025 accredited third-party laboratory before it ships. This is the released report for the current batch, exactly as the lab signed it.
ILSILS LaboratoriesIndependent, ISO/IEC 17025 accredited
Certificate of Analysis
99.03%
Purity by HPLC
- Lot
- IGF0002
- Tested
- Jul 30, 2026
- Labeled
Technical specifications
Compound Information
Structural Modifications
How It Differs from Native IGF-1
- N-terminal extension
- +13 amino acids (MFPAMPLLSLFVN)
- Position 3 substitution
- Glu → Arg
- Total length
- 83 vs 70 amino acids
- IGFBP affinity
- Dramatically reduced
- IGF-1R affinity
- Retained
Peer-reviewed literature
The research behind this compound, cited in full.
Every research claim on this page traces back to one of the 5 publications below.
- 01Biochemical Journal · 1992Insulin-like growth factor-I (IGF-I) and especially IGF-I variants are anabolic in dexamethasone-treated rats
- 02Journal of Endocrinology · 1996Superior potency of infused IGF-I analogues which bind poorly to IGF-binding proteins is maintained when administered by injection
Important research notice
Not for human, veterinary, or food use. This product is sold exclusively for research and educational purposes. It is not intended to diagnose, treat, cure, or prevent any disease.
All clinical trial data and research findings presented on this page are sourced from peer-reviewed journals and official publications. They are provided for educational reference only and should not be interpreted as medical advice or product claims.
By purchasing this product, you confirm that you are a qualified researcher and will use it in accordance with all applicable laws and regulations.
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