FD&C Blue No. 1

**Semantic type:** Indicator, Reagent, or Diagnostic Aid|Organic Chemical

**Synonyms:** - Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(2-sul-fophenyl)methylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, Hydroxide, Inner Salt, Disodium Salt - Brilliant Blue - C.I. Acid Blue 9, Disodium Salt - C.I. Food Blue 2 - FD&C BLUE NO. 1 - Vibracolor Blue ABL9