Sustainable fluorescence quenching approach for betahistine analysis: greenness evaluation
A simple, sensitive, and eco-friendly spectrofluorimetric method has been developed for the determination of betahistine in bulk powder and tablet formulations. The method relies on fluorescence quenching of eosin Y at 540 nm (λex = 335 nm) through formation of a non-fluorescent ion-pair complex between the dye and pro...