3,3'-Dithiodipropionic Acid di(N-Hydroxysuccinimide Ester)

3,3′-Dithiodipropionic acid di(N-hydroxysuccinimide ester) (DSP) is a homobifunctional cross-linking reagent. 3,3′-Dithiodipropionic acid di(N-hydroxysuccinimide ester) contains a cleavable disulfide linkage. 3,3′-Dithiodipropionic acid di(N-hydroxysuccinimide ester) is usually coupled to molecules which contain primary amines through amide bonds.