rosolic

adjective

1. Pertaining to, or designating, a complex red dyestuff (called <i>rosolic acid</i>) 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 <i>methyl aurin</i>, and, formerly, <i>corallin</i>.

   adjective

   Source: webster1913