corallin

from The Collaborative International Dictionary of English v.0.48

Rosolic \Ro*sol"ic\, a. [Rose + carbolic.] (Chem.)
   Pertaining to, or designating, a complex red dyestuff (called
   rosolic acid) which is analogous to rosaniline and aurin. It
   is produced by oxidizing a mixture of phenol and cresol, as a
   dark red amorphous mass, {C20H16O3}, which forms weak salts
   with bases, and stable ones with acids. Called also {methyl
   aurin}, and, formerly, {corallin}.
   [1913 Webster]

from The Collaborative International Dictionary of English v.0.48

Corallin \Cor"al*lin\, n. [So named in allusion to the color of
   red corallin, fr. L. corallum coral.] (Chem.)
   A yellow coal-tar dyestuff which probably consists chiefly of
   rosolic acid. See {Aurin}, and {Rosolic acid} under
   {Rosolic}.
   [1913 Webster]

   {Red corallin}, a red dyestuff which is obtained by treating
      aurin or rosolic acid with ammonia; -- called also
      {p[ae]onin}.

   {Yellow corallin}. See {Aurin}.
      [1913 Webster]

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