B7-33 is a synthetic single-chain relaxin mimetic derived from the B-chain of relaxin, designed to selectively activate the RXFP1 receptor while reducing affinity for other relaxin receptors. It is supplied as a high-purity white lyophilized powder at >=99% HPLC purity in sealed vials. B7-33 is investigated in research on fibrosis, tissue remodeling and relaxin-receptor signaling, and is commonly applied in cell-culture and preclinical studies. The stable freeze-dried format supports easy reconstitution and reproducible dosing. The relaxin-derived peptide enables selective probing of RXFP1 signaling without the complexities of full-length relaxin biology, supporting studies in fibrosis, vasodilation and organ protection. Researchers use it in cardiac and renal models to evaluate receptor-mediated responses. The lyophilized powder is provided with HPLC purity data and batch-level documentation. The peptide offers a defined alternative to full-length relaxin for receptor studies, with reduced sequence complexity that simplifies handling and analysis. Investigators can evaluate concentration-dependent receptor activation and downstream signaling in engineered cell lines, and the lyophilized format supports consistent reconstitution across multi-week experimental schedules. Every batch is analyzed by HPLC before release, and purity, peptide content and appearance are recorded for traceability. The product is packed in sealed vials with moisture-barrier protection, and both trial packs and bulk quantities are available to match research needs. Our export team prepares English documentation and selects reliable courier services for each destination, with tracking numbers provided after dispatch. 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.