

3-[[2-[(4-azidobenzoyl)amino]ethyl]dithio]propanoic acid by Molecular Depot is a 3-[[2-[(4-azidobenzoyl)amino]ethyl]dithio]propanoic acid, a cleavable photoreactive cross-linker carrying an aryl azide at one end and a carboxylic acid at the other. An aryl azide is inert until it is illuminated with ultraviolet light, at which point it forms a highly reactive nitrene that inserts into whatever happens to be nearby. It is used in photoaffinity labelling and photo-cross-linking of protein interactions, in interaction mapping by mass spectrometry and in reversible cross-linking workflows. Each unit contains 25 mg. MBP supplies Molecular Depot research reagents to research labs in the United States, Canada and worldwide.