Description
IGF-1 LR3, also known as Long R3 IGF-1, is a synthetic analogue of human insulin-like growth factor 1. It features an arginine substitution which reduces its binding to IGF-binding proteins compared with native IGF-1, making it useful for investigating IGF activity in experimental models.
Life Peptide supplies IGF-1 LR3 / 1 mg as a high-purity, lyophilised peptide for laboratory and analytical research. Each batch is accompanied by a Certificate of Analysis (COA), with additional independent verification available for selected batches.
Product characteristics
| Specification | Details |
| Product | IGF-1 LR3 |
| Quantity | 1 mg per vial |
| Form | Lyophilised powder |
| Purity | ≥97.3% (HPLC) |
| Molecular formula: | C₄₀₀H₆₂₅N₁₁₁O₁₁₅S₉ |
| Molecular weight | 9111 g/mol |
| Storage | Refrigerated at 2–8°C |
| Intended application | Laboratory and analytical research |
Quality control
Current batch: IGFLR1-A26457
- Internal HPLC purity: 97.3%
Further information
IGF-1 LR3 belongs to the GHRH analogue and growth hormone signaling research class. For a broader overview of GH signaling pathways and comparative peptide mechanisms, see our Growth hormone peptides research guide
For general laboratory preparation and handling, consult our Peptide Reconstitution Guide.
Related catalogue entry: Acetic Acid 2% / 10 ml.
Disclaimer
This product is sold for research purposes only. It is not intended to diagnose, treat, cure, or prevent any disease. Buyer assumes full responsibility for proper handling and use.







