IGF-1 LR3 (Long Arginine 3-IGF-1) is a recombinant analogue of insulin-like growth factor-1 engineered with an extended N-terminus that reduces binding to IGF-binding proteins, studied in growth research. It is supplied as a high-purity white lyophilized powder at >=99% HPLC purity in sealed vials. IGF-1 LR3 is investigated in research on protein synthesis, cell growth and anabolic signaling, and is commonly applied in cell-culture and preclinical studies. The lyophilized format provides stable reconstitution and consistent dosing.. All batches undergo rigorous quality testing and batch-specific COA documentation can be provided on request. Store unopened vials sealed at 2-8 degree C, away from light and humidity; for longer preservation store at -20 degree C without repeated freeze-thaw cycles. Trial orders and bulk supply are supported, with OEM, private-label and secure neutral packaging available for global delivery. For research use only.