Indigo carmine

• Catalog Number: orb1306895
• Category: Small Molecules
• Description: Indigo carmine
• Purity: 98.72%
• MW: 466.35
• Biological Activity: Indigo carmine (NSC-8646) is an indolesulfonic acid. It is used as a dye in renal function testing for the detection of nitrates and chlorates.
• CAS Number: 860-22-0
• Formula: C₁₆H₈N₂Na₂O₈S₂
• SMILES: O=S(C1=CC2=C(N/C(C2=O)=C3NC4=C(C=C(S(=O)([O-])=O)C=C4)C\3=O)C=C1)([O-])=O.[Na+].[Na+]
• Storage: -20°C
• Note: For research use only