Alprostadil (CAS 745-65-3) is a high-purity prostaglandin E1 (PGE1) vasodilator API, with a natural molecular structure that exerts potent vasorelaxant and antiplatelet effects. Its core mechanism activates adenylate cyclase in vascular smooth muscle cells, increasing cyclic adenosine monophosphate (cAMP) levels to relax blood vessels, improve blood flow, and prevent platelet aggregation. Produced under strict GMP-compliant processes, it ensures ultra-high purity, consistent bioactivity, and compliance with international cardiovascular and urological pharmaceutical standards.