SPDP-C6-Sulfo-NHS Ester (CAS: 169751-10-4) is a water-soluble, heterobifunctional crosslinker with a Sulfo-NHS ester for amine coupling and a pyridyldithiol group for thiol reactivity. Its C6 spacer enhances flexibility, making it ideal for protein conjugation, ADC development, and surface modification.
Polyethylene Glycol PEG Linkers > Thiol PEG > SPDP-PEG-NHS-ester
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