{"product_id":"igf1-lr3","title":"IGF-1 LR3","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eIGF-1 LR3 (Insulin-like Growth Factor-1 Long R3) is a synthetic analogue of human IGF-1, engineered with enhanced stability and bioactivity. This 83-amino acid polypeptide features an N-terminal extension of 13 amino acids and an arginine substitution at position 3, resulting in significantly reduced binding affinity to IGF-binding proteins and extended half-life compared to native IGF-1.\u003c\/p\u003e\n\u003ch3\u003eMolecular Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular Formula:\u003c\/strong\u003e C400H625N111O115S7\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMolecular Weight:\u003c\/strong\u003e 9117.5 Da\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSequence Length:\u003c\/strong\u003e 83 amino acids\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePurity:\u003c\/strong\u003e ≥98% (HPLC verified)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAppearance:\u003c\/strong\u003e White lyophilised powder\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolubility:\u003c\/strong\u003e Soluble in sterile water or bacteriostatic water\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eStructural Modifications\u003c\/h3\u003e\n\u003cp\u003eThe LR3 variant incorporates critical structural modifications that distinguish it from endogenous IGF-1:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e13-amino acid N-terminal extension derived from IGF-1 Ec domain\u003c\/li\u003e\n\u003cli\u003eArginine substitution at position 3 (Glu→Arg)\u003c\/li\u003e\n\u003cli\u003eReduced IGF-binding protein affinity (100-1000 fold decrease)\u003c\/li\u003e\n\u003cli\u003eExtended circulating half-life (20-30 hours vs 10-12 minutes for native IGF-1)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eResearch Applications\u003c\/h3\u003e\n\u003cp\u003eIGF-1 LR3 is utilised in various research contexts investigating growth factor signalling pathways, cellular proliferation mechanisms, and metabolic regulation studies. The compound's enhanced stability profile makes it particularly suitable for extended experimental protocols.\u003c\/p\u003e\n\u003ch3\u003eStorage \u0026amp; Handling\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage Temperature:\u003c\/strong\u003e -20°C (lyophilised), 2-8°C (reconstituted, short-term)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStability:\u003c\/strong\u003e 24 months lyophilised, 30 days reconstituted at 2-8°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReconstitution:\u003c\/strong\u003e Use sterile water or bacteriostatic water\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHandling:\u003c\/strong\u003e Avoid repeated freeze-thaw cycles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eQuality Assurance\u003c\/h3\u003e\n\u003cp\u003eEach batch undergoes comprehensive analytical testing including HPLC purity analysis, mass spectrometry verification, and endotoxin testing. Certificate of Analysis provided with each shipment.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFor research purposes only. Not for human consumption or therapeutic use.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Peptidal","offers":[{"title":"1mg","offer_id":55294177050972,"sku":"IGF1LR3-1MG-006","price":52.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0943\/7632\/9564\/files\/Untitleddesign_19.png?v=1778844048","url":"https:\/\/shop.peptidal.co.uk\/products\/igf1-lr3","provider":"Peptidal","version":"1.0","type":"link"}