mPEG-SS-COOH (cleavable)

mPEG-SS-COOH incorporates a monomethoxy polyethylene glycol chain connected to a terminal carboxylic acid through a disulfide linkage. The disulfide bond in mPEG-SS-COOH enables redox-responsive cleavage in reducing environments. mPEG-SS-COOH is widely used for constructing stimulus-sensitive drug conjugates, biodegradable hydrogels, and nanoparticles requiring controlled release or intracellular activation.