IGF-1 LR3 1mg lyophilized peptide for in vitro research. An extended analog of insulin-like growth factor 1 with enhanced receptor binding affinity and prolonged stability, featuring an Arg³ substitution and a 13-amino acid N-terminal extension. Studied for IGF-1R binding kinetics, PI3K/Akt/mTOR signaling cascade activation, and cell proliferation assays in cultured cell lines. For in vitro research use only — not for human or veterinary use. Specifications: - Quantity: 1mg - Form: Lyophilized Powder - Sequence: MFPAMPLSSL…GGY (83 amino acids, with Arg³ substitution) - Molecular Weight: ~9111 Da - Purity: ≥99% (HPLC verified) Intended Use: This product is strictly for in vitro research conducted by qualified laboratories. Not for human or veterinary use, and must not be used in food, cosmetics, drugs, or diagnostics. This compound has not been evaluated by the FDA. It is not intended to diagnose, treat, cure, or prevent any disease. All sales are final. Buyer assumes full responsibility for lawful handling, usage, and storage.