Cefixime EP Impurity D CAS 97164-56-2
| CAS No. | 97164-56-2 |
| Molecular Formula | C16H15N5O7S2 |
| Molecular Weight | 453.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Cefixime EP Impurity D (CAS 97164-56-2, C16H15N5O7S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefixime EP Impurity D is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 453.45 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
CATO manufactures Cefixime EP Impurity D 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.
Physical & Chemical Properties
| Molecular Formula | C16H15N5O7S2 |
| Molecular Weight | 453.45 g/mol |
| Purity | >95% |
| Storage | Store in a cool place (≤25°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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefixime Standards
- Cefixime (CAS 79350-37-1)
- Cefixime Impurity 14 (CAS CATO-C4X-113914)
- Cefixime Impurity 15 (CAS CATO-C4X-113915)
- Cefixime EP Impurity C (CAS 108691-83-4)
- Cefixime Impurity 54 (CAS CATO-C4X-113954)
- Cefixime Impurity 27 (CAS 29126-11-2)
- Cefixime Impurity 41 (CAS CATO-C4X-113941)
- Cefixime Impurity 42 (CAS CATO-C4X-113942)
Recommended Standards
- Aztreonam Impurity 42 (CAS CATO-C4X-152242)
- Aztreonam impurity 56 (CAS CATO-C4X-152256)
- Aztreonam impurity 64 (CAS CATO-C4X-152264)
- Aztreonam USP RC A (CAS 87500-74-1)
- Vancomycin Impurity M (CAS CATO-C4X-177522)
- Ibrutinib Impurity 71 (CAS CATO-C4X-106471)
- Cefazolin Impurity 16 (CAS CATO-C4X-157716)
- (S)-Ethyl 4-amino-2-((tert-butoxycarbonyl)amino)-4-oxobutanoate (CAS 84787-81-5)
- Ethyl 6-methoxybenzo[b]thiophene-2-carboxylate (CAS 187753-62-4)
- 2-Amino-5-chloro-α-(cyclopropyl-d4-ethynyl)-4-isopropylsilyloxy-α-(trifluoromethyl)benzenemethanol (CAS 1216572-03-0)
- N-Benzyl-5-hydroxycyclohex-3-enecarboxamide (CAS 61088-56-0)
- 2-(Pyrrolidin-3-ylthio)pyrimidine hydrochloride (CAS 1420796-15-1)
- (1H-Imidazol-2-yl)(1-methylcyclopropyl)methanone (CAS 952200-98-5)
- Semaglutide Impurity 139 (CAS CATO-C4X-2226139)
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