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IGF-1 LR3 is a modified variant of insulin-like growth factor 1 (IGF-1), known as Long R3. The modifications prolong its activity and reduce its binding to carrier proteins. It is studied in cell growth research. NeoPeptidos offers it with ≥99% HPLC purity, for research use.
Technical profile
| Product | IGF-1 LR3 |
|---|---|
| CAS | 946870-92-4 |
| Molecular formula | C₄₀₀H₆₂₅N₁₁₁O₁₁₅S₉ |
| Molecular weight | 9117.6 Da |
| Sequence | Long Arg3 IGF-1 (83 aa) |
| Purity | 99% HPLC |
| Presentation | Lyophilized vial; bacteriostatic water included |
| Use | For scientific research use only |
What is IGF-1 LR3?
IGF-1 is a key mediator of many of the effects of growth hormone. The Long R3 variant incorporates an extension and an amino acid substitution that reduce its affinity for binding proteins (IGFBP), thereby increasing its availability as a study tool.
Research context
Research with IGF-1 LR3 focuses on the signaling pathways of cell growth and proliferation in in vitro and preclinical models.
The NeoPeptidos product is research-grade material; it includes no indications or administration schedules and is intended exclusively for researchers.
Handling and reconstitution
See the reconstitution guide and the storage guide.
Quality and traceability
≥99% purity by HPLC and batch COA. See quality control.
🔬 Updated on June 8, 2026 · Reviewed by the NeoPeptidos team · Content for research purposes (RUO).