Spectrum Chemical manufactures and distributes fine chemicals with quality you can count on including those with CAS number 632-69-9, Whether you call it Rose Bengal, Acid Red 94 , 4 -5 -6 -7-Tetrachloro-2' -4' -5' -7'-tetraiodofluorescein Sodium Salt , Bengal Rose B Sodium Salt , Rose Bengal Sodium or Aka105(1) you can be assured the Rose Bengal products offered by Spectrum, meet or exceed the grade requirements or specifications for each individual product.