2,2'-Biquinoline-4,4'-dicarboxylic Acid (sodium salt)

2,2'-Biquinoline-4,4'-dicarboxylic acid (BCA) is a colorimetric reagent for the detection of copper (Cu+). BCA and Cu+ form a stable 2:1 complex that has an absorbance maximum at 562 nm. It is commonly used as a reagent in the colorimetric BCA protein quantitation assay in which Cu2+ is converted to Cu+ as a function of protein concentration under alkaline conditions.CAS Number: 979-88-4. Synonyms: BCA, Bicinchoninic Acid, 2,2'-Bicinchoninic Acid, 4,4'-Dicarboxy-2,2'-biquinoline. Molecular Formula: C20H10N2O4 . 2Na. Formula Weight: 388.3. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: PBS (pH 7.2): 10 mg/ml. lambdamax: 264 nm. SMILES: O=C([O-])C1=CC(C2=CC(C([O-])=O)=C(C=CC=C3)C3=N2)=NC4=C1C=CC=C4.[Na+].[Na+]. InChi Code: InChI=1S/C20H12N2O4.2Na/c23-19(24)13-9-17(21-15-7-3-1-5-11(13)15)18-10-14(20(25)26)12-6-2-4-8-16(12)22-18,,/h1-10H,(H,23,24)(H,25,26),,/q,2*+1/p-2. InChi Key: AUPXFICLXPLHBB-UHFFFAOYSA-L.