Cefetamet Impurity 9 CAS 1705612-87-8
| CAS No. | 1705612-87-8 |
| Molecular Formula | C25H33N5O8S2 |
| Molecular Weight | 595.69 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Cefetamet Impurity 9 (C25H33N5O8S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 595.69 g/mol, it falls into the moderately-high-molecular-weight range. 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 Cefetamet Impurity 9 (CAS 1705612-87-8), a pharmacopoeial impurity reference standard (molecular formula C25H33N5O8S2, MW 595.69 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
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 | C25H33N5O8S2 |
| Molecular Weight | 595.69 g/mol |
| Purity | 97%+ |
| 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.) | 1994 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefetamet Standards
- Cefetamet Impurity 1 (CAS CATO-C4X-12871)
- Cefetamet Impurity 7 (CAS 1705612-80-1)
- Delta-2-Cefetamet Pivoxil (CAS 126617-54-7)
- (E)-Cefetamet Pivoxil (CAS 1705612-82-3)
- Cefetamet Impurity 8 (CAS CATO-C4X-12878)
- Cefetamet Pivoxil (CAS 65243-33-6)
- Cefetamet Impurity 6 (CAS CATO-C4X-12876)
- Cefetamet Impurity 5 (CAS CATO-C4X-12875)
Recommended Standards
- Ethyl 2,4,4-trimethyl-3,4-dihydro-2H-pyrrolo[2,1-b][1,3]oxazine-8-carboxylate (CAS 34579-31-2)
- Nintedanib Impurity 94 (CAS CATO-C4X-181494)
- Ergostine (CAS 2854-38-8)
- CAS 89947-80-8 (CAS 89947-80-8)
- Ensifentrine impurity 40 (CAS CATO-C4X-335340)
- Amlodipine Impurity 103 (CAS 53901-54-5)
- Dapoxetine Impurity 77 (CAS CATO-C4X-143977)
- 5-Bromo-2-(cyclopropylmethoxy)pyridine (CAS 494772-02-0)
- 5-Methoxybenzo[b]thiophene-2-carbohydrazide (CAS 1263215-21-9)
- 3',5'-Dichloro-[1,1'-biphenyl]-4-sulfonyl chloride (CAS 885267-95-8)
- 2-Chloropyridine-d4 (CAS 1001003-94-6)
- Famotidine Impurity 11 (CAS 90237-03-9)
- Ethyl 2-(4-oxo-6-(trifluoromethyl)quinolin-1(4H)-yl)acetate (CAS 1215526-40-1)
- Semaglutide impurity 103 (CAS 1446013-07-5)
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