Cholesteryl-PEG1000-Biotin is a lipid product with a cholesterol backbone linked to a PEG unit on one end and a biotin unit on the other. Biotin (Biotin) is an enzyme cofactor useful for protein labeling, while PEG is a low-toxicity hydrophilic polymer. Cholesteryl-PEG1000-Biotin is applicable in drug circulation time studies.
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