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Name: 2, 2'-Biquinoline-4,4’-dicarboxylic acid
Other name: 2,2'-Bicinchoninic acid; Bicinchoninic acid; 4,4'-Dicarboxy-2,2'-biquinoline; 2-(4-Carboxyquinolin-2-yl)quinoline-4-carboxylic acid; BCA
Molecular weight: 344.32
Melting point: 364-366oC
Appearance: light-brown powder
Package: 100g, 500g, 1Kg, 25Kg
Bicinchoninic acid is a weak acid composed of two carboxylated quinoline rings. Bicinchoninic acid is most commonly employed by biochemists in the bicinchoninic acid (BCA) assay, which is used to determine the total level of protein in a solution. In this assay, two molecules of bicinchoninic acid chelate a single Cu+ ion, forming a purple water-soluble complex that strongly absorbs light at 562 nm.