NHS-SS-Ph (CAS No 2750799-12-1) is a specialized reagent used in biomedical research primarily for its role in bioconjugation processes It originates from the synthesis of amine-reactive esters linked by a disulfide bond facilitating targeted delivery in various molecular pathways NHS-SS-Ph is often utilized in studies involving protein modification where it exhibits activity in the nanomolar to low micromolar range Its applications are widely observed across in vitro cell models including cancer and stem cell research and in vivo animal studies for drug screening purposes The reagent s utility in these contexts underscores its significance in advancing therapeutic developments and biomarker discovery Experimental concentrations typically depend on the specific research design allowing for tailored investigations based on the study s objectives and conditions