IGF-1 LR3 1mg | 10-Vial Kit | Muscle Growth Peptide
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IGF-1 LR3 1mg | 10-Vial Kit — Long-arginine-3 IGF-1 analogue — 1000-fold reduced IGFBP binding affinity extends free half-life to 20-30 hours enabling sustained IGF-1R signalling for anabolism and cell proliferation research. ≥99% HPLC purity, MS confirmed, Janoshik COA. Research use only.
* The information on this page is a summary and is not intended to cover all available information about this medication. It does not cover all possible uses, directions, precautions, drug interactions or adverse effects and is not a substitute for the expertise and judgement of your healthcare professional.
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What is IGF-1 LR3?
IGF-1 LR3 (Long-Arg3 Insulin-Like Growth Factor-1) is a 83-amino acid IGF-1 analog (13-residue N-terminal extension). Long-acting IGF-1 analog with N-terminal 13-residue extension that reduces IGFBP binding by ~1000-fold, extending half-life to 20–30 hours vs 15 minutes for native IGF-1. Activates IGF-1R directly without requiring upstream GHR or hepatic IGF-1 production — IGFBP-resistant in serum-containing media.
Research Applications
IGF-1R Pharmacology
Direct IGF-1 receptor activation, PI3K-Akt-mTOR signalling
Extended Duration Studies
20–30hr half-life vs native IGF-1 (15min) — chronic exposure models
Serum Culture Research
IGFBP-resistant — suitable for serum-containing cell culture media
Muscle Anabolism
Protein synthesis, satellite cell activation, hypertrophy models
vs Native IGF-1
Isolate IGFBP-independent effects by comparison with native IGF-1
Quick Specs
| Form | Lyophilized powder |
| Purity | ≥99% by HPLC — every batch |
| CAS Number | 946870-92-4 |
| Molecular Formula | C₁₀₄H₁₇₄N₃₂O₃₀S |
| Peptide Type | Long-Acting Recombinant Peptide / IGF-1 Analog |
| Identity | MS molecular weight confirmed — every batch |
| COA | Janoshik-independent, publicly verifiable |
| Manufacture | In-house Fmoc SPPS — Qingdao, China |
| Storage | -20°C sealed | 2–8°C reconstituted (2–4 weeks) |
| Shelf Life | 24 months unopened |
Certificate of Analysis (COA)
Frequently Asked Questions
Frequently asked questions
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Websites in professional use templating systems. Commercial publishing platforms and content management systems ensure that you can show different text, different data using the same template. When it’s about controlling hundreds of articles, product pages for web shops.
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