4-Chloro-6-nitrosoresorcinol

4-Chloro-6-nitrosoresorcinol is a chemical compound used in various industrial and research applications. It is also known as 4-Chloro-6-nitroso-1,3-benzenediol or simply as CNR. The compound is a yellowish-brown powder that is soluble in water and methanol but insoluble in most organic solvents. One of the primary applications of CNR is as a chromogenic reagent for the determination of various metal ions such as copper, iron, nickel, and cobalt. It is also used in the synthesis of novel dyes, pharmaceuticals, and other organic compounds. In addition, CNR has been used in the development of colorimetric assays for the detection of various biomolecules. The chemical structure of CNR consists of a resorcinol ring substituted with a chloro and nitroso group at positions 4 and 6, respectively. The presence of these functional groups imparts unique chemical properties to the compound making it suitable for various applications. The nitroso group, for instance, can undergo reduction to form an amino group which can then be used for the synthesis of various organic compounds. In terms of safety, CNR is considered to be a hazardous substance and should be handled with care. It is important to wear appropriate protective equipment such as gloves and goggles when handling the compound.