PC Biotin-PEG8-NHS carbonate ester is useful for introducing a biotin moiety to amine-containing biomolecules directly and efficiently. The hydrophilic PEG arm provides better solubility to the labeled molecules in aqueous media. Captured biomolecules can be efficiently photoreleased using near-UV, low intensity lamp (e.g. 365 nm lamp at 1-5 mW/cm2).
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