ORALITH BRILLIANT PINK R

Peach color powder. Insoluble in water, ethanol, acetone, soluble in xylene, tetralin. Red in concentrated sulfuric acid, then changed to green; red in dilute sulfuric acid; red in nitric acid. Yellow in alkaline solution of insurance powder; colorless in acidic solution.

Oralith Brilliant Pink R (cas# 2379-74-0) is a useful research chemical. Dyes and metabolites, Environmental Testing

The synthesis of Oralith Brilliant Pink R involves the condensation reaction between 6-chloro-4-methyl-3-oxobenzo[b]thiophene-2(3H)-ylidene and 6-chloro-4-methylbenzo[b]thiophen-3(2H)-one.  This reaction typically occurs under acidic conditions, often utilizing sulfuric acid as a catalyst.