99% Pharmaceutical-Grade Purity - Rigorously purified cortagen for nerve repair, stress hormone balance and cognitive anti-aging research use. 1.Lab-Verified 5mg/10mg Vials - Precisely formulated sterile lyophilized powder for laboratory and research applications. 2.Neuroregulation Benefits - Khavinson synthetic tetrapeptide for neuronal regeneration, neuroinflammation relief, cortisol balance and synaptic plasticity research studies. 3.Third-Party HPLC/LC-MS Tested - Each batch passes strict purity and identity testing with complete COA documentation. 4.Easy Reconstitution - Quickly dissolved with bacteriostatic water for convenient laboratory research use.