N-Mal-N-bis(PEG4-acid-amido-PEG24-amido-PEG23-C16) constitutes a branched PEG linker featuring two C16 hydrophobic tails, two PEG24 branches for enhanced water solubility, and a terminal maleimide for cysteine conjugation. The branched structure supports attachment of ADC payloads or other molecules.
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