Reactive Blue 4 is an anthraquinone dye, as a single colorimetric chemosensor for sequential determination of multiple analytes with different optical responses in aqueous media. Reactive Blue 4 is phytotoxic, cytotoxic and genotoxic. Reactive Blue 4 [1][2].
[1]. Reactive Blue 4 as a Single Colorimetric Chemosensor for Sequential Determination of Multiple Analytes with Different Optical Responses in Aqueous Media: Cu2+-Cysteine Using a Metal Ion Displacement and Cu2+-Arginine Through the Host-Guest Interaction. [2]. Chaudhari AU, et al. Effective biotransformation and detoxification of anthraquinone dye reactive blue 4 by using aerobic bacterial granules. Water Res. 2017 Oct 1;122:603-613.