Used as a hydrophilic linker in pharmaceutical and bioconjugation applications, this compound enables the attachment of drug molecules to targeting agents or imaging probes through its terminal bromopropyl group, which readily reacts with nucleophiles. The long polyether chain provides water solubility and flexibility, reducing steric hindrance and improving bioavailability. It is particularly valuable in the design of antibody-drug conjugates (ADCs) and targeted therapies where controlled spacing and solubility are critical. Additionally, it serves as a spacer in diagnostic assays and biosensors, enhancing signal detection by minimizing non-specific interactions.