 | C4X-152227 | N/A | Impurity | |
| Aztreonam Open-Ring Ethyl Ester |
| C4X-152229 | 1255913-01-9 | Impurity | |
| Aztreonam Dimer Impurity 29 |
| C4X-152235 | 87500-74-1(Free Base) | Impurity | |
| Aztreonam Open-Ring Impurity Sodium salt(Aztreonam USP RC A Sodium salt) |
| C4X-152236 | N/A | Impurity | |
| Aztreonam Dimer Impurity 36 |
| C4X-152237 | N/A | Impurity | |
| Open-ring Desulfated Aztreonam Ethyl Ester 2 |
| C4X-152238 | N/A | Impurity | |
| Aztreonam N-Butyl Ester |
 | C4X-15224 | 102507-85-7 | Impurity | |
| Aztreonam Impurity 4 |
| C4X-15225 | N/A | Impurity | |
| "(2R,3R)-Aztreonam Impurity" |
| C4X-15226 | 102579-59-9 | Impurity | |
| Desulfo Aztreonam(Aztreonam USP RC D) |
| C4X-15227 | N/A | Impurity | |
| "(2SR,3S)-Open Ring Aztreonam" |
