Figure 1. Reaction scheme of the bromination of thymol blue (left) to bromthymol blue (right)

From

Optical and Raman Experiments for the Electro-organic Synthesis of Bromothymol Blue and Bromophenol Blue

Achim Habekost

World Journal of Chemical Education. 2025, 13(1), 19-29 doi:10.12691/wjce-13-1-4