Buy IGF-1 LR3 Peptide – Research Description 

IGF-1 LR3 is a long-acting research peptide widely used in laboratory studies involving cellular growth signaling, protein pathway research, and tissue response models. Researchers often choose IGF-1 LR3 because it offers improved stability compared to standard IGF-1. As a result, many labs rely on it when they need longer exposure windows and consistent signaling performance in controlled research settings.

What Makes IGF-1 LR3 Different?

IGF-1 LR3 is a modified version of insulin-like growth factor-1. Researchers developed this peptide with two key structural changes that help extend activity in research models. First, it includes an arginine substitution at position 3. Second, it adds a 13-amino-acid extension at the N-terminus. Because of these modifications, research teams frequently explore IGF-1 LR3 for its reduced interaction with IGF-binding proteins. Therefore, it remains a popular option for receptor signaling studies where duration and stability matter.

Many researchers use IGF-1 LR3 in muscle cell and anabolic signaling research. For example, labs often study it in models involving protein synthesis pathways, cellular growth response, and recovery signaling. In addition, research teams use IGF-1 LR3 in tissue repair and regeneration-focused models because growth factor pathways play an important role in cellular rebuilding processes.

IGF-1 LR3 also supports metabolic research applications. Many labs study IGF-related peptides in glucose and nutrient signaling pathways. For this reason, IGF-1 LR3 can fit into multi-pathway research designs that include growth factor and metabolic signaling together. Furthermore, researchers often include it in comparative testing to evaluate performance differences between IGF-1 variants under identical conditions.

IGF-1 LR3 typically comes as a white to off-white lyophilized powder. This format supports long-term storage and allows researchers to reconstitute the peptide based on their preferred lab protocols. Since research teams often run repeated trials, IGF-1 LR3 offers a reliable option for consistent handling, structured testing, and controlled experimental design.

IGF-1 LR3 is intended strictly for research purposes only and is not for human consumption.

IGF-1 LR3 – Composition & Specifications (Improved)

Product Name

IGF-1 LR3 Peptide

Also Known As

• Insulin-Like Growth Factor-1 LR3

• Long R3 IGF-1

Peptide Type:Synthetic IGF-1 analog (modified growth factor peptide)

Composition

IGF-1 LR3 is a modified version of human IGF-1 created for laboratory research. Researchers use IGF-1 LR3 because its structure supports improved stability and longer activity in controlled research models.

Key Modifications (LR3)

IGF-1 LR3 includes two widely referenced structural changes:

• Researchers replace the amino acid at position 3 with arginine (R3)

• Researchers add a 13-amino-acid extension at the N-terminus

Because of these modifications, many labs study IGF-1 LR3 for its reduced interaction with IGF-binding proteins. As a result, research teams often use it when they want longer signaling windows and consistent receptor activity in experimental settings.

Peptide Details

Molecular Weight (Approx.)

IGF-1 LR3 has an approximate molecular weight of:
~9,111 Da

Solubility

Researchers typically reconstitute IGF-1 LR3 using:

• Sterile water (research use)

• Buffered solutions (research use)

• Dilute acidic solution (lab practice varies)

However, solubility depends on concentration, pH, and lab conditions.

Purity

Most research-grade IGF-1 LR3 meets:
≥ 98% purity (HPLC)
(Batch-specific COA confirms purity.)

Storage Conditions

For best stability, store IGF-1 LR3 using the following guidelines:

• Keep lyophilized powder at -20°C for long-term storage

• Store reconstituted solution at 2°C–8°C

• Protect the vial from light and moisture

• Avoid repeated freeze/thaw cycles

Intended Use Disclaimer

IGF-1 LR3 is intended strictly for research purposes only and is not for human consumption.

IGF-1 LR3 – COA Table 

Product Information

Analytical Results

Conclusion

This product meets in-house research specifications.