Cefixime EP Impurity A CAS 1614255-90-1
| CAS No. | 1614255-90-1 |
| Molecular Formula | C16H17N5O8S2 |
| Molecular Weight | 471.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C16H17N5O8S2, Cefixime EP Impurity A contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 471.46 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 Cefixime EP Impurity A (CAS 1614255-90-1), a pharmacopoeial impurity reference standard (molecular formula C16H17N5O8S2, MW 471.46 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
As a certified reference material (CRM), Cefixime EP Impurity A meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
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.) | 1993 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefixime Standards
- Cefixime Impurity C16 (CAS 1335475-08-5)
- Cefixime Impurity 100 (CAS CATO-C4X-1139100)
- Cefixime Impurity 17 (CAS CATO-C4X-113917)
- Cefixime Impurity 51 (CAS CATO-C4X-113951)
- Cefixime Impurity 87 (CAS CATO-C4X-113987)
- Cefixime Impurity 12 (CAS 1335555-87-7)
- Cefixime Impurity 55 (CAS CATO-C4X-113955)
- Cefixime impurity 85 (CAS CATO-C4X-113985)
Recommended Standards
- Azilsartan Impurity 159 (CAS CATO-C4X-1096159)
- Eltrombopag Impurity 5 (CAS CATO-C4X-11985)
- Mitoxantrone Impurity 29 (CAS CATO-C4X-103429)
- Eltrombopag Impurity 77 (CAS CATO-C4X-119877)
- Mometasone Impurity 49 (CAS CATO-C4X-170449)
- Drotaverin Impurity 66 (CAS CATO-C4X-243566)
- Vonoprazan Impurity 151 (CAS CATO-C4X-1020151)
- 3-Bromo-5-methoxy-4-(pyridin-2-ylmethoxy)benzaldehyde (CAS 433330-10-0)
- (4-(N,N-dimethylsulfamoyl)naphthalen-1-yl)boronic acid (CAS 1704097-52-8)
- Flomoxef Impurity 44 (CAS CATO-C4X-138244)
- 3-Chloro-1-benzothiophene (CAS 7342-86-1)
- Levocarnitine Impurity 9 (CAS 461-05-2)
- (5-(Pyridazin-3-yl)pyridin-3-yl)methanol (CAS 1346687-42-0)
- Des-Leu26-Tirzepatide (CAS CATO-CPTD788947)
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