PYY 3-36 (Peptide YY, residues 3-36) is a 34-amino-acid gut hormone that acts as a satiety signal through Y2 receptor activation, widely studied in appetite and metabolic research. It is supplied as a high-purity white lyophilized powder, >=99% by HPLC, in sealed vials for laboratory use. PYY 3-36 is investigated in research on appetite suppression, energy intake regulation, gastrointestinal function and neuropeptide Y receptor signaling, and is commonly applied in cell-based assays and preclinical studies. As a research peptide with a defined sequence, it does not have a single unified CAS number. The freeze-dried form ensures high stability and easy reconstitution for reproducible experimental dosing. Strict quality control is maintained on every batch, and COA is available on request. Keep sealed at 2-8 degree C away from light; -20 degree C recommended for long-term storage. The selective Y2-receptor activity of this gut hormone is central to studies of satiety signaling and gut-brain communication, and it is frequently examined alongside GLP-1-family peptides in appetite research. Investigators measure food intake, gastric motility and neural activation in animal models. The product is supplied in sealed vials with confirmed purity and stable lyophilized presentation. Each production lot is tracked from synthesis through lyophilization and final testing, ensuring consistent quality across batches. Product specifications, storage conditions and reconstitution recommendations are provided with every shipment, and our sales team responds promptly to technical inquiries. Long-term supply arrangements are possible for frequent buyers. For detailed specifications, quotations or technical support, please contact our sales team directly. WhatsApp: +852 4423 6619, contact person: Aurora, Email: 18963519387@163.com. We reply to all inquiries promptly and are glad to provide batch information and shipping options. YIWU SHUNXIAN TRADING CO., LTD. is a professional supplier of high-purity research-grade peptides and matching laboratory consumables, dedicated to supporting global research teams for biochemical and life-science studies. We bridge qualified peptide raw-material resources with stable international logistics service, offering researchers and industry partners a dependable source for their laboratory development projects.