| Mass (m/z) | Formula | Polarity | Start (min) | End (min) | (N)CE | ID |
| 391.12483 | C17H18N4O7 | Positive | 15.00 | 28.00 | 10 | β-MethyldiazoAzetidinone |
| 302.17821 | C14H27NO4Si | 15.00 | 28.00 | 10 | β-Methyl Azetidinone | |
| 218.11756 | C13H15NO2 | 15.00 | 28.00 | 35 | Dihydrobenzoxazinone | |
| 310.14451 | C13H25NO4Si | 15.00 | 28.00 | 25 | 4-Acetoxy Azetidinone | |
| 309.05397 | C13H12N2OS | 15.00 | 28.00 | 10 | Thiolactone | |
| 479.22080 | C23H24N2O7Si | 28.00 | 38.00 | 35 | Azetidinone Malonate Ester | |
| 698.21265 | C32H35N5O11S |
| 28.00 | 38.00 | 35 | Diprotected Meropenem |
| 505.21130 | C23H32N4O7Si | 28.00 | 38.00 | 10 | Silylated β-Methyl diazo Azetidinone | |
| 308.10480 | C16H18ClNO3 | 28.00 | 38.00 | 10 | 2-Chlorodihydro Benzoxazinone | |
| 352.05428 | C16H18BrNO3 | 28.00 | 38.00 | 10 | 2-Bromodihydro Benzoxazinone | |
| 391.12483 | C17H18N4O7 | 15.00 | 28.00 | 10 | β-Methyldiazo Azetidinone | |
| 302.17821 | C14H27NO4Si | 15.00 | 28.00 | 10 | β-Methyl Azetidinone |