"indigotine" . . "Disodium[2(2\u2032)E]-3,3\u2032-dioxo-1,1\u2032,3,3\u2032-tetrahydro[2,2\u2032-biindolylidene]-5,5\u2032-disulfonate" . . "C.I. Acid Blue 74" . "E132" . . "4 G" . . "Indigo carmine" . . . . . . "Indigotine" . . . . . . . . . . "5,5\u2032-indigodisulfonic acid sodium salt" . "Indigo carmine" . . "FD&C Blue 2" . . "Food Blue 1" . . . "indigotine" . . . "Sicovit Indigotin 85" . . "indigo blue" . "Brilliant Indigo" . . . . . . . "C.I. 73015" . . "indigo carmine" . "indigotindisulfonate sodium" . . .