Oxytocin is a nine-amino-acid cyclic neuropeptide hormone involved in uterine contraction, milk ejection, social bonding and stress regulation, with receptor actions studied across reproductive and behavioral neuroscience. Its wide physiological reach makes it a foundational reference peptide. This product is a white lyophilized powder at >=99% HPLC purity in a sealed vial. We provide batch analysis data, flexible pack sizes and reliable international shipping. Independent HPLC verification data can be provided for critical projects, and our quality team responds to specification inquiries with batch-specific details. Orders are consolidated carefully to protect product integrity, and express couriers are used for time-sensitive research deliveries. Temperature-controlled transport is available for sensitive compounds.