Ponceau S (C.I. 27195), 25 g

27195) is characterized by a well-defined molecular structure consisting of a disodium salt of 4-(2-hydroxy-5-nitro-phenylazo)-1,5-diphenylcarbazone, with a molecular formula of C25H22N4O8Na2 and a molecular weight of 556.4 g/mol. This compound belongs to the class of azo dyes, which are organic compounds containing an azo group (-N=N-). Ponceau S is commonly used as a blotting reagent due to its ability to bind to proteins and visualize protein bands on polyacrylamide gels. It is offered in a pure grade, with a specified purity of 98%, and is supplied in a 25 gram pack. Additionally, it exhibits strong absorption in the visible light spectrum, with a maximum absorption wavelength at approximately 510 nm.

• CAS Number: 6226-79-5