The ABH crosslinker binds to the Fc portion of an antibody molecule, away from the antigen binding site, resulting in a
divalent immunologically active immunoglobulin derivative. Pierce - [Read ABH (p-Azidobenzoyl hydrazide) PDF]
PDP-Hydrazide 3-(2-pyridyldithio)propionyl hydrazide is heterobifunctional cleavable crosslinker containing a hydrazide group and pyridyl disulfide residue that react with carbohydrates and sulfhydryls, respectively.
Pierce - [Read PDP-Hydrazide PDF]