Cefotaxime EP Impurity A CAS 65052-63-3
| CAS No. | 65052-63-3 |
| Molecular Formula | C14H15N5O5S2 |
| Molecular Weight | 397.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefotaxime EP Impurity A is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 397.43 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).
Cefotaxime EP Impurity A (CAS 65052-63-3) is a certified pharmaceutical impurity reference standard with the molecular formula C14H15N5O5S2 and a molecular weight of 397.43 g/mol.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
CATO manufactures Cefotaxime EP Impurity A 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 | C14H15N5O5S2 |
| Molecular Weight | 397.43 g/mol |
| Purity | >90% |
| 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 |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefotaxime Standards
- Cefotaxime Impurity 22 (CAS CATO-C4X-120122)
- Cefotaxime Impurity 45 (CAS 1950566-51-4)
- Cefotaxime Impurity 33 (CAS CATO-C4X-120133)
- Cefotaxime Impurity 50 (CAS CATO-C4X-120150)
- Cefotaxime Impurity 50 (CAS CATO-C4X-120157)
- Cefotaxime Impurity 95 (CAS CATO-C4X-120195)
- Cefotaxime EP Impurity B (CAS 66340-28-1)
- Cefotaxime Impurity 21 (CAS CATO-C4X-120121)
Recommended Standards
- Alogliptin Impurity 93 (CAS CATO-C4X-109993)
- Cefetamet Impurity 2 (CAS CATO-C4X-12872)
- Azilsartan Impurity 4 (CAS 1397836-52-0)
- Cefetamet Impurity 3 (CAS 90712-47-3)
- Clopidogrel Hydrochloride EP Impurity A (CAS 144750-42-5)
- Albendazole impurity 30 (CAS CATO-C4X-153530)
- Beraprost Impurity 24 (CAS CATO-C4X-218424)
- 2,3-Dichloro-N-(2-(pyridin-3-yl)pyrimidin-4-yl)benzamide (CAS 439109-54-3)
- 4-(Diethylamino)-2-butyn-1-ol (CAS 10575-25-4)
- Potassium (thiomethyl)methyltrifluoroborate (CAS 2144763-01-7)
- 2-Fluoro-5-methyl-3-(methylthio)benzaldehyde (CAS 2092104-74-8)
- 5-Hydroxy-2-(3-methoxystyryl)-1-benzofuran-3-carbaldehyde (CAS 853097-47-9)
- 1-Vinyl-1h-benzo[d]imidazole (CAS 26972-40-7)
- Peptide YY (13-36) (canine, mouse, porcine, rat) (CAS 86895-09-2)
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