Secretin is a 27-amino-acid gastrointestinal hormone released from duodenal S cells that stimulates pancreatic bicarbonate secretion and regulates gut motility, serving as the founding member of the secretin family of peptides. Its receptor pharmacology supports digestive-physiology and peptide-hormone research. This product is a white lyophilized powder at >=99% HPLC purity in a sealed vial. Complete documentation and bulk options are available. Weighing and packing are performed under controlled conditions to ensure accurate fill and secure sealing. Custom requirements such as specified vial sizes, custom labels and quantity splits can be discussed, and repeat orders are prioritized in our production queue for faster turnaround.