Cefixime Impurity 14 CAS CATO-C4X-113914
| CAS No. | CATO-C4X-113914 |
| Molecular Formula | C16H15N5O7S2 |
| Molecular Weight | 453.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Cefixime Impurity 14 (C16H15N5O7S2) 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 453.45 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Cefixime Impurity 14 (CAS CATO-C4X-113914) is a certified pharmaceutical impurity reference standard with the molecular formula C16H15N5O7S2 and a molecular weight of 453.45 g/mol.
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.
As a certified reference material (CRM), Cefixime Impurity 14 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 | C16H15N5O7S2 |
| Molecular Weight | 453.45 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 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefixime Standards
- Cefixime (CAS 79350-37-1)
- Cefixime Impurity 15 (CAS CATO-C4X-113915)
- Cefixime EP Impurity C (CAS 108691-83-4)
- Cefixime Impurity 54 (CAS CATO-C4X-113954)
- Cefixime EP Impurity D (CAS 97164-56-2)
- Cefixime Impurity 27 (CAS 29126-11-2)
- Cefixime Impurity 41 (CAS CATO-C4X-113941)
- Cefixime Impurity 42 (CAS CATO-C4X-113942)
Recommended Standards
- K252b (CAS 99570-78-2)
- 5-Ethyl-3-hydroxy-2-(((2-(naphthalen-1-yloxy)-5-(trifluoromethyl)phenyl)imino)methyl)cyclohex-2-en-1-one (CAS 1024259-71-9)
- Finerenone Impurity 125 (CAS CATO-C4X-2880125)
- Finerenone Impurity 123 (CAS CATO-C4X-2880123)
- Palbociclib Impurity 135 (CAS CATO-C4X-1125135)
- Flomoxef Impurity 25 (CAS 64350-77-2)
- Quetiapine EP Impurity E (CAS 1371638-05-9)
- 3-Chloropyridine-4-thiol (CAS 1247828-52-9)
- tert-Butyl methyl(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)carbamate (CAS 817618-57-8)
- 4,5-Dibromo-2-(4-bromophenoxy)aniline (CAS 873980-49-5)
- n-(3-Amino-4-fluorophenyl)-3-hydroxypropane-1-sulfonamide (CAS 1193389-91-1)
- 1-(4-Bromophenoxy)propan-2-amine (CAS 70289-30-4)
- 4-{[(3-Bromo[1,1-biphenyl]-4-yl)oxy]-methyl}piperidine hydrochloride (CAS 1220018-05-2)
- Vialox Peptide(Pentapeptide-3) diacetate (CAS 725232-44-0)
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