Indigo carmine - Wikipedia
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File:Indigo Carmine Reaction.jpg - Wikipedia
Carmine - Wikipedia
Indigo Carmine. Colorant and pH and Redox Indicator
Indigo carmine - Alchetron, The Free Social Encyclopedia
Indigo carmine - Wikipedia
List of colors
Indigo, C16H10N2O2
Indigo Carmine
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Indigo carmine, C16H8N2Na2O8S2
Structure of indigo carmine (IC)
Indigokarmin – Wikipedia