Cefuroxime Impurity 38 CAS CATO-C4X-124538
| CAS No. | CATO-C4X-124538 |
| Molecular Formula | C31H28N7O14S2 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Cefuroxime Impurity 38.
As a process- or degradation-related impurity, Cefuroxime Impurity 38 (CAS CATO-C4X-124538, C31H28N7O14S2Na) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Cefuroxime Impurity 38 (C31H28N7O14S2Na) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 21.5, corresponding to approximately 21 ring(s) or double-bond equivalent(s). With a molecular weight of 809.71 g/mol, it falls into the 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.
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.
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 | C31H28N7O14S2 Na |
| Molecular Weight | 809.71 g/mol |
| Purity | >95% |
| 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) | 21.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 7 |
| Sulfur Atoms | 2 |
Related Cefuroxime Standards
- Cefuroxime Open-ring Impurity 44 (CAS 1177709-12-4)
- Di(cefuroxime Ethyl) Ether (CAS 1202925-10-7)
- Cefuroxime Axetil EP Impurity A (CAS 123458-61-7)
- Cefuroxime Axetil Impurity 5 (CAS 136235-54-6)
- Cefuroxime Impurity 33 (CAS 1467-70-5)
- Cefuroxime Impurity 36 (CAS 15690-38-7)
- Cefuroxime-d3 (CAS 1803240-98-3)
- Cefuroxime Impurity 51 (CAS 213912-35-7)
Recommended Standards
- Cefprozil Impurity 31 (CAS CATO-C4X-149231)
- Avibactam Impurity 64 (CAS CATO-C4X-134864)
- Indobufen Impurity N2 (CAS 36691-07-3)
- 3-Carboxy-4-methylsulfonylphenylboronic acid (CAS 2377608-72-3)
- Perfluorophenyl 2-(acetylthio)acetate (CAS 129815-48-1)
- Methyl 2-fluoro-5-((5-oxo-1,2,3,4,5,6-hexahydropyrido[2,3-d]pyridazin-8-yl)methyl)benzoate (CAS 1036403-28-7)
- 618446-08-5 1-(Pyrimidin-4-yl)methanamine--hydrogen chloride (1/2) DTXSID50670737 (CAS 618446-08-5)
- 2-(Benzyloxy)-4-bromobenzoic acid (CAS 693257-19-1)
- 4-(3-Nitrophenyl)thiazol-2-amine hydrochloride (CAS 114196-93-9)
- Semaglutide impurity 34 (CAS CATO-C4X-222634)
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