Cefotaxime S-Oxide 2 CAS 71048-88-9
| CAS No. | 71048-88-9 |
| Molecular Formula | C16H17N5O8S2 |
| Molecular Weight | 471.46 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Cefotaxime S-Oxide 2 (CAS 71048-88-9), molecular formula C16H17N5O8S2 and molecular weight 471.46 g/mol, is a CATO reference standard with documented purity and traceability.
Cefotaxime S-Oxide 2 (C16H17N5O8S2) 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C16H17N5O8S2 |
| Molecular Weight | 471.46 g/mol |
| Purity | >90% |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefotaxime Standards
- E-Cefotaxime S-Oxide (CAS 69132-42-9)
- Cefotaxime S-Oxide (CAS 97466-27-8)
- (E)-Cefotaxime S-Oxide (CAS CATO-C4X-120131)
- Cefotaxime S-Oxide (CAS CATO-C4X-120158)
- Cefotaxime Impurity 90 (CAS CATO-C4X-120190)
- Cefotaxime Impurity 5 (CAS 64485-89-8)
- Cefotaxime Impurity 16 (CAS CATO-C4X-120116)
- Cefotaxime EP Impurity D Sodium Salt (CAS 65715-12-0)
Recommended Standards
- Sarecycline Impurity 5 (CAS CATO-C4X-27985)
- Fluoxetine Impurity 34(Mixture of Isomers) (CAS CATO-C4X-135234)
- Eltrombopag Impurity 77 (CAS CATO-C4X-119877)
- Etrasimod impurity 19 (CAS CATO-C4X-321419)
- 2-Methyl-4-oxo-1,4-dihydro-quinoline-8-carboxylic acid (CAS 72784-21-5)
- 6-Dodecyl(14-crown-4)-6-ethanoldiethylphosphate (CAS 106868-29-5)
- Butyl[(pyridin-2-yl)methyl]amine dihydrochloride (CAS 1240568-58-4)
- N-(tert-Butoxycarbonyl)-4-oxo-L-proline (CAS 84348-37-8)
- Ribavirin Impurity 52 (CAS 3641-13-2)
- 5-Methylisothiazol-3-amine hydrochloride (CAS 31857-79-1)
- 2-(((Benzyloxy)carbonyl)amino)-6-chlorobenzoic acid (CAS 1342121-57-6)
- 2-((4-Chloro-3-fluorobenzyl)amino)butan-1-ol (CAS 1247456-52-5)
- 1-(4-(3-Methoxypropyl)-4H-1,2,4-triazol-3-yl)ethanamine dihydrochloride (CAS 1609407-91-1)
- Tau Peptide (306-336) (Repeat 3 Domain) trifluoroacetate salt (CAS 330456-26-3)
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