Biotin-PEG4-acid is a heterobiofunctional biotin PEG analogue containing a carboxylic acid group. The hydrophilic PEG spacer arm imparts water solubility that is transferred to the biotinylated molecule. PEG Linkers may be useful in the development of antibody drug conjugates. References: Deng CY, Long YY, Liu S, Chen ZB, Li C. [Construction of biotin-modified polymeric micelles for pancreatic cancer targeted photodynamic therapy]. Yao Xue Xue Bao. 2015 Aug;50(8):1038-44. Chinese. PubMed PMID: 26669006.

纯度：≥98%

CAS：721431-18-1