Indigo carmine

• Product Name Alternative:

  sodium (E)-3,3'-dioxo-[2,2'-biindolinylidene]-5,5'-disulfonate

• Sequence:

  indigotine; 5;5′-indigodisulfonic acid sodium salt; Brilliant Indigo

• Purity:

  0.98

• Solubility:

  insoluble in EtOH; ≥83.6 mg/mL in DMSO; ≥83.9 mg/mL in H2O

• Smiles:

  O=C(C1=C(N/2)C=CC(S([O-])(=O)=O)=C1)C2=C3C(C(C=C(S([O-])(=O)=O)C=C4)=C4N\3)=O.[Na+].[Na+]

• Molecular Formula:

  C16H8N2Na2O8S2

• Molecular Weight:

  466.35

• Shipping Conditions:

  Blue ice

• Storage Conditions:

  Store at -20°C.

• CAS Number:

  860-22-0