CAS 573-58-0 appears in our catalog under these names: Congo Red (90%), Direct Red 28, Congo Red, Congo Red, indicator grade , Congo Red, >98.0%(HPLC). Offered by: TRC, Dr. Ehrenstorfer, GLPBio, Thermo Scientific (Alfa Aesar), TCI. Available pack sizes: 10g, 1g, 100mg, 50mg, 25g, 100g, 500g, 2kg.
Congo Red is an indicator dye that is blue-violet at pH 3.0 and red at pH 5.0. It contains a 3,3'-(biphenyl-4,4'-diyldidiazene-2,1-diyl)bis(4-aminonaphthalene-1-sulfonate). It is functionally related to a 3,3'-(biphenyl-4,4'-diyldidiazene-2,1-diyl)bis(4-aminonaphthalene-1-sulfonic acid).
Source: ChEBI
| Molecular formula | C32H22N6Na2O6S2 |
|---|---|
| Molecular weight | 696.7 g/mol |
| IUPAC name | disodium;4-amino-3-[[4-[4-[(1-amino-4-sulfonatonaphthalen-2-yl)diazenyl]phenyl]phenyl]diazenyl]naphthalene-1-sulfonate |
| InChIKey | IQFVPQOLBLOTPF-UHFFFAOYSA-L |
| SMILES | C1=CC=C2C(=C1)C(=CC(=C2N)N=NC3=CC=C(C=C3)C4=CC=C(C=C4)N=NC5=C(C6=CC=CC=C6C(=C5)S(=O)(=O)[O-])N)S(=O)(=O)[O-].[Na+].[Na+] |
Computed by PubChem (NCBI)