Indigotindisulfonate Sodium |
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| FD&C Blue No. 2; Indigo Blue; Indigo Disulfonate; Blue, Indigo; Blue, Soluble Indigo; Disulfonate, Indigo; Indigo Blue, Soluble | |
| An indolesulfonic acid that is used as a dye in renal function testing and as a reagent for the detection of nitrates and chlorates and in the testing of milk. | |