“…[6][7][8][9] On account of its superiority in the fields of biology and medicine, NAC identification and quantification have been studied for many years and several methods have been well designed and performed for NAC detection. Instrument methods including chromatography, [10][11][12] electrophoresis analysis, [13] mass spectrometry, [14] chemiluminescence analysis, [15,16] electrochemistry method, [17] spectrophotometry, [18] and fluorescence analysis [19][20][21][22] have been successfully established for NAC determination in human tissue and pharmaceutical samples. Among these methods, fluorescence analysis holds the merits of simple operation, rapid response, sensitive, and convenient detection, making it a promising method for pharmaceutical analysis.…”