has_property has_reactive_group is_cleavable homofunctional cross-linker membrane permeable iodinatable cleavable S-S bond hydroxyphenyl azide BASED 2 21.299999237060546875 Bis(2-(4-azidosalicylamido)ethyl) disulfide Bis(beta-[4-azidosalicylamido]-ethyl) disulfide. N, N'-(Dithiobis-ethylene)bis(4-azido-2-hydroxy-benzamide) N,N'-Bis(4-azidosalicoyl)cystamine XLMOD XLMOD:02093