Ampicillin Impurity 77 CAS CATO-C4X-144377
| CAS No. | CATO-C4X-144377 |
| Molecular Formula | C16H16N2O5S |
| Molecular Weight | 348.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ampicillin Impurity 77 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
As a process- or degradation-related impurity, Ampicillin Impurity 77 (CAS CATO-C4X-144377, C16H16N2O5S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Ampicillin Impurity 77 (C16H16N2O5S) contains a flavonoid core, 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
Physical & Chemical Properties
| Molecular Formula | C16H16N2O5S |
| Molecular Weight | 348.37 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Ampicillin Standards
- Ampicillin impurity 65 (CAS 55675-51-9)
- Ampicillin Impurity 46 (CAS CATO-C4X-144346)
- 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 Trihydrate EP Impurity N (CAS CATO-C4X-144353)
- Ampicillin Impurity 98 (CAS 49841-96-5)
Recommended Standards
- LCZ-696 Impurity 78 (CAS 2605-68-7)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com