N-Boc-PEG3-bromide is a PEG linker containing a Boc protected amine and a bromide group. The protected amine can be deprotected under mild acidic conditions. The bromide (Br) is a very good leaving group for nucleophilic substitution reactions. The hydrophilic PEG spacer increases solubility in aqueous media.
N-Boc-PEG4-bromide is a PEG/Alkyl/ether-based PROTAC linker can be used in the synthesis of PROTACs. N-Boc-PEG4-bromide is a cleavable ADC linker used in the synthesis of antibody-drug conjugates (ADCs)[1].
Cleavable Linker; PEGs; Alkyl/ether
[1] Jan Anderl, et al. Amatoxin-Conjugates with Improved Linkers. US20130259880A1