Method for detecting content of undecylenoyl phenylalanine

The invention discloses a method for detecting the content of undecylenoyl phenylalanine, and relates to the technical field of phenylalanine content determination. The method for detecting the content of undecylenoyl phenylalanine adopts high performance liquid chromatography to detect the content of undecylenoyl phenylalanine, a stationary phase is octadecylsilane chemically bonded silica, and a mobile phase is a methanol-phosphoric acid aqueous solution. The mobile phase selects a methanol-phosphoric acid aqueous solution, the peak pattern and the separation degree of undecylenoyl phenylalanine are improved, the detection method is simple, convenient and easy to implement, high in accuracy and sensitivity and good in reproducibility, after verification of the method, the specificity, the linearity and the instrument precision are good, and under the detection method, a sample solution can be stably placed at room temperature, the recovery rate is good, and an effective detection method is provided for cont