3,5-Dinitrosalicylaldehyde (CAS 2460-59-5)

3,5-Dinitrosalicylaldehyde (DNSA) is a highly versatile and widely employed reagent in both organic and biochemistry laboratories. This compound exists as yellow to orange-red crystalline solids and exhibits excellent solubility in water, alcohols, and various organic solvents. The extensive utilization of 3,5-Dinitrosalicylaldehyde in scientific research is attributed to its broad reactivity with various molecules. It serves as a valuable labeling agent for proteins, carbohydrates, and lipids. Moreover, 3,5-Dinitrosalicylaldehyde finds application in detecting and quantifying the concentration of specific molecules, such as glucose and cholesterol, in biological samples. Furthermore, this compound facilitates the identification of certain enzymes, including proteases and glycosidases, in biological samples. The reactivity of 3,5-Dinitrosalicylaldehyde arises from a process known as Schiff-base formation. This involves the reaction between a carbonyl group on the 3,5-Dinitrosalicylaldehyde molecule and a primary amine group on the target molecule. Through this reaction, a covalent bond is formed between the two molecules, enabling 3,5-Dinitrosalicylaldehyde to serve as a reliable label for the target molecule.