Retrieving "Indigo Class" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Blue Dye

   Linked via "Indigo Class"

   | Dye Class | Representative Compound | Typical Substrate Affinity | Primary Chromophore Feature |
   | :--- | :--- | :--- | :--- |
   | Indigo Class | Indigotin | Cellulosic Fibers | Bis-indole system |
   | Triphenylmethane | Patent Blue V | Silk, Polyamides | Quaternary Nitrogen Centers |
   | Phthalocyanine | [Copper Phthalocyanine](/entries/copper-phthalo…