Ampicillin Trihydrate EP Impurity N CAS CATO-C4X-144353
| CAS No. | CATO-C4X-144353 |
| Molecular Formula | C16H19N3O4S |
| Molecular Weight | 349.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Ampicillin Trihydrate EP Impurity N (CAS CATO-C4X-144353), a pharmacopoeial impurity reference standard (molecular formula C16H19N3O4S, MW 349.40 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C16H19N3O4S, Ampicillin Trihydrate EP Impurity N contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 349.40 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Ampicillin Trihydrate EP Impurity N meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C16H19N3O4S |
| Molecular Weight | 349.40 g/mol |
| Purity | >95% |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Ampicillin Standards
- Ampicillin Impurity 100 (CAS CATO-C4X-1443100)
- Ampicillin EP Impurity C(Isomeric mixture 2) (CAS CATO-C4X-144318)
- Ampicillin EP Impurity B (CAS 19379-33-0)
- Ampicillin EP Impurity C(Isomeric mixture1) (CAS CATO-C4X-14433)
- Ampicillin Impurity 98 (CAS 49841-96-5)
- Ampicillin (CAS 69-53-4)
- Ampicillin Impurity 46 (CAS CATO-C4X-144346)
- Ampicillin impurity 65 (CAS 55675-51-9)
Recommended Standards
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- L-Cefradine (CAS CATO-C4X-121520)
- Tedizolid Impurity 18 (CAS 2044709-71-7)
- Brimonidine Impurity 32 (CAS CATO-C4X-156632)
- Orforglipron Impurity 137 (CAS CATO-C4X-3234137)
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