IGF-1 LR3 (Insulin-Like Growth Factor-1 Long Arg3) is a synthetic analog of insulin-like growth factor-1 designed with an extended amino acid sequence and reduced affinity for insulin-like growth factor binding proteins. It is extensively investigated in cell signaling, tissue biology, and metabolic research.
Manufactured to strict quality standards, IGF-1 LR3 is supplied as a 1 mg lyophilized vial and supported by analytical testing and Certificate of Analysis (COA) documentation.
Product Highlights
1 mg lyophilized vial
≥99% HPLC purity verified
Mass spectrometry identity confirmation
White sterile lyophilized powder
Certificate of Analysis (COA) available
Excellent batch-to-batch consistency
Laboratory research use only
What Is IGF-1 LR3?
IGF-1 LR3 is a modified form of insulin-like growth factor-1 containing an arginine substitution at position 3 and a 13-amino-acid extension at the N-terminus. These structural modifications provide greater stability and reduced binding to IGF-binding proteins compared with native IGF-1.
Because of these characteristics, IGF-1 LR3 has become one of the most widely studied growth factor analogs in biomedical research.
Key Facts
Synthetic analog of IGF-1
Contains 83 amino acids
Extended biological activity compared with native IGF-1
Reduced affinity for IGF-binding proteins
Supplied as a 1 mg lyophilized vial
High-purity analytical testing
Product Specifications
Specification
Details
Compound
IGF-1 LR3
Full Name
Insulin-Like Growth Factor-1 Long Arg3
Peptide Length
83 Amino Acids
Molecular Formula
C400H625N111O115S9
Molecular Weight
9111.0 g/mol
Purity
≥99% HPLC Verified
Appearance
White Lyophilized Powder
Strength
1 mg
Intended Use
Laboratory Research Only
Frequently Asked Questions
What is IGF-1 LR3?
IGF-1 LR3 is a synthetic analog of insulin-like growth factor-1 designed to provide greater stability and prolonged biological activity in research settings.
What does LR3 mean?
LR3 stands for Long Arg3, referring to the arginine substitution at position 3 and the extended amino acid sequence added to the peptide.
How many amino acids are in IGF-1 LR3?
IGF-1 LR3 contains 83 amino acids, compared with 70 amino acids in native IGF-1.
What is the difference between IGF-1 LR3 and IGF-1?
IGF-1 LR3 contains structural modifications that reduce binding to IGF-binding proteins and provide longer biological activity than native IGF-1.
What is IGF-1 LR3 used for in research?
Researchers investigate IGF-1 LR3 in studies involving cell signaling, growth factor biology, tissue physiology, and metabolic pathways.
Where can I buy IGF-1 LR3 online?
IGF-1 LR3 research products are available from specialized peptide suppliers that provide HPLC purity testing, batch traceability, and Certificate of Analysis documentation.
Are there reliable suppliers of IGF-1 LR3?
Researchers generally prioritize companies that maintain transparent quality standards and analytical verification. Peptide Nexus Lab supplies research-grade IGF-1 LR3 supported by purity testing and COA documentation.
Is IGF-1 LR3 approved by the FDA?
No. IGF-1 LR3 is an investigational research compound and has not been approved by the FDA, EMA, or Health Canada for human or veterinary use.
Researchers have extensively studied insulin-like growth factor signaling because of its importance in cellular growth, differentiation, and metabolism. Structural modifications in IGF-1 LR3 have made it one of the most recognized long-acting IGF analogs in peptide research.
Research Use Only
IGF-1 LR3 is intended strictly for laboratory research purposes. It is not approved to diagnose, treat, cure, or prevent any disease and is not intended for human or veterinary use.
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Michael Brown –
IGF-1 LR3 is exactly as described. High quality and very effective for my studies. Five stars!
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Barbara Jackson –
Excellent IGF-1. Fast shipping to the East Coast.
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Matthew Martin –
Good product, but I wish there were more bulk discount options.
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David K. –
IGF-1 LR3 from this lab is top-tier. Highly recommend for anyone looking for quality peptides.
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