Peak 1 at Retention Time 1.24 Abundance scan119(1.239min):DJX-20.D(-) 43 57 300000 200000 29 100000 50 15 31 1175 19 62 90 0 T m/z--> 10 20 30 40 50 60 708090100 Peak 2 at Retention Time 1.25 Abundance Scan120(1,249min):DJX-20.D(-) 55 1000000 500000 39 27 75 38 51 90 62 01 1518 13 m/z--> 10 20 30 40 50 60 70 80 90100 Peak 3 at Retention Time 1.51 Abundance scan146(1.511min):DJX-20.D(-) 57 29 43 71 100000 50000 15 31 7885 0 119 m/z--> 102030405060708090100110120 Peak 4 at Retention Time 1.54 Abundance scan149(1,542min):DJX-20.D(-) 55 2000000 1000000 39 90 75 0 15 70 m/z--> 20 40 60 80100120140160180200220240260 图S4样品不同保留时间的离子碎片1 Figure S4 Fragment ion I of the sample with different retention time S3S3 图 S4 样品不同保留时间的离子碎片 1 Figure S4 Fragment ion 1 of the sample with different retention time