Imipenem Impurity 99 CAS CATO-C4X-166299
| CAS No. | CATO-C4X-166299 |
| Molecular Formula | C12H19N3O5S |
| Molecular Weight | 317.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Imipenem Impurity 99 (C12H19N3O5S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
CATO supplies Imipenem Impurity 99 (CAS CATO-C4X-166299), a pharmacopoeial impurity reference standard (molecular formula C12H19N3O5S, MW 317.36 g/mol) used for the identification and quantification of trace impurities in APIs.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C12H19N3O5S |
| Molecular Weight | 317.36 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Imipenem Standards
- Imipenem Impurity 110 (CAS CATO-C4X-1662110)
- Imipenem Impurity 121 (CAS CATO-C4X-1662121)
- Imipenem Impurity 126 (CAS CATO-C4X-1662126)
- Imipenem EP Impurity B (CAS 1197869-90-1)
- Imipenem Impurity 4 (CAS CATO-C4X-16624)
- Imipenem Impurity 116 (CAS CATO-C4X-1662116)
- Imipenem Impurity 9 (CAS CATO-C4X-16629)
- Imipenem Impurity 130 (CAS CATO-C4X-1662130)
Recommended Standards
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