![Indigotindisulfonate sodium United States Pharmacopeia (USP) Reference Standard](/deepweb/assets/sigmaaldrich/product/structures/111/777/2eef2932-5a7a-4e53-bf1d-e2439f95ffea/640/2eef2932-5a7a-4e53-bf1d-e2439f95ffea.png)
Indigotindisulfonate sodium
![Indigotindisulfonate sodium United States Pharmacopeia (USP) Reference Standard](/deepweb/assets/sigmaaldrich/product/structures/111/777/2eef2932-5a7a-4e53-bf1d-e2439f95ffea/640/2eef2932-5a7a-4e53-bf1d-e2439f95ffea.png)
Synonym(s):
Indigo carmine, Acid Blue 74, Indigo-5,5′-disulfonic acid disodium salt, Indigocarmine
Empirical Formula (Hill Notation):
C16H8N2Na2O8S2
CAS Number:
Molecular Weight:
466.35
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