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.. Every manufacturing run is QC-checked and batch-specific analysis reports are provided on request. Unopened vials should be kept sealed at 2-8 degree C away from light and moisture, and for longer-term storage -20 degree C is advised while minimizing freeze-thaw exposure. We welcome both sample orders and large quantities, and offer OEM, private-label and secure neutral packing for international shipping. For laboratory research use only.