3,6,9,12,15-pentaoxaheptadecane-1,17-diyl diacrylate (CAS No.: 26570-48-9) is a polyethylene glycol derivative containing diacrylate groups. Its molecular structure is based on hexaglycol (C12H26O7), with terminal hydroxyl groups esterified with acryloyl chloride to form photopolymerizable acryloyloxy groups (-OCOCH=CH2), and its molecular formula is C18H30O9. The production process typically involves esterification of hexaglycol with acryloyl chloride in the presence of an acid-binding catalyst, followed by purification to obtain a high-purity product. As a photosensitive crosslinking agent, this compound is widely used in photocurable coatings, resins, and biomedical materials. It forms a three-dimensional network structure through UV-initiated radical polymerization, allowing for the regulation of material mechanical properties and degradation rate. It holds significant application value in drug delivery carriers and tissue engineering scaffolds.