IGF-1 LR3 1mg

IGF-1 LR3 (Long R3) is an 83-amino-acid analogue of human insulin-like growth factor 1, modified by substituting arginine for glutamic acid at position 3 and adding a thirteen-residue N-terminal extension. Both changes reduce its affinity for IGF-binding proteins, which substantially extends its half-life relative to native IGF-1 and is why it is preferred for in-vitro work. Supplied lyophilised. Independently assayed by a third-party laboratory, named on this page; the certificate of analysis for this lot, with its measured purity and batch number, is published on this page. For laboratory research use only.