Cefuroxime Impurity 99 CAS CATO-C4X-124599
| CAS No. | CATO-C4X-124599 |
| Molecular Formula | C15H13N3O7S |
| Molecular Weight | 379.34 g/mol |
| 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 99.
As a process- or degradation-related impurity, Cefuroxime Impurity 99 (CAS CATO-C4X-124599, C15H13N3O7S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Cefuroxime Impurity 99 (C15H13N3O7S) 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 11.0, corresponding to approximately 11 ring(s) or double-bond equivalent(s). With a molecular weight of 379.34 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.
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 | C15H13N3O7S |
| Molecular Weight | 379.34 g/mol |
| Purity | ≥95% |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefuroxime Standards
- Cefuroxime impurity 108 (CAS CATO-C4X-1245108)
- Cefuroxime Impurity 78 (CAS CATO-C4X-124578)
- Cefuroxime Sodium EP Impurity A (CAS 56271-94-4)
- Cefuroxime impurity 107 (CAS CATO-C4X-1245107)
- Cefuroxime Impurity 25 (CAS CATO-C4X-124525)
- Cefuroxime Open-ring Impurity 44 (CAS 1177709-12-4)
- Cefuroxime Impurity 50 (CAS CATO-C4X-124550)
- Cefuroxime Impurity 51 (CAS 213912-35-7)
Recommended Standards
- Ethyl (5-amino-3-(4-(trifluoromethyl)phenyl)-1,2-dihydropyrido[3,4-b]pyrazin-7-yl)carbamate (CAS 82586-03-6)
- Osimertinib Impurity 36 (CAS CATO-C4X-204536)
- CCT-245737, >98% (HPLC) (CAS 1489389-18-5)
- Osimertinib Impurity 53 (CAS CATO-C4X-204553)
- Clofazimine Impurity 10 (CAS CATO-C4X-207110)
- Cimetidine impurity 24 (CAS CATO-C4X-158924)
- Pazopanib Impurity 55 (CAS CATO-C4X-172555)
- 1-Methoxymethoxy-3-(trifluoromethyl)benzene (CAS 334018-79-0)
- Lovastatin Impurity 34 (CAS CATO-C4X-168434)
- Neon (20Ne, 99.95%) (CAS 13981-34-5)
- 2-Propoxy-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (CAS 1073371-87-5)
- (2S)-2-chloro-N-[(1R)-1-phenylethyl]propanamide (CAS 1687750-35-1)
- 4-(Pyridin-2-ylsulfanyl)benzaldehyde (CAS 87626-35-5)
- Semaglutide impurity 107 (CAS CATO-C4X-2226107)
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