Cefditoren Impurity 2 CAS 138514-32-6
| CAS No. | 138514-32-6 |
| Molecular Formula | C25H28N6O7S3 |
| Molecular Weight | 620.72 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C25H28N6O7S3, Cefditoren Impurity 2 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 620.72 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).
Cefditoren Impurity 2 (CAS 138514-32-6) is a certified pharmaceutical impurity reference standard with the molecular formula C25H28N6O7S3 and a molecular weight of 620.72 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.
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 | C25H28N6O7S3 |
| Molecular Weight | 620.72 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 3 |
Related Cefditoren Standards
- Cefditoren Pivoxil (CAS 117467-28-4)
- Cefditoren Impurity 1 (CAS 148774-47-4)
- Cefditoren Pivoxil Impurity 5 (CAS 878002-86-9)
- Cefditoren Impurity 10 (CAS CATO-C4X-135810)
- Cefditoren pivoxil ring opener (CAS CATO-C4X-135823)
- Cefditoren Impurity 24 (CAS 2409806-43-3)
- Cefditoren Impurity 4 (CAS CATO-C4X-13584)
- Cefditoren Impurity 57 (CAS CATO-C4X-135857)
Recommended Standards
- 4,4''-Bis(diphenylamino)-[1,1':4',1''-terphenyl]-2',5'-dicarbaldehyde (CAS 1042941-53-6)
- ((2R,3S)-3-(Bis(4-methoxyphenyl)(phenyl)methoxy)tetrahydrofuran-2-yl)methyl (2-cyanoethyl) diisopropylphosphoramidite (CAS 401813-16-9)
- Phe-Lys(Fmoc)-PAB (CAS 2149584-03-0)
- Fmoc-(3,(Pbf)Guanidino)-Ala-OH (CAS 1313054-86-2)
- Trelagliptin impurity 82 (CAS 933772-79-3)
- Mupirocin EP Impurity F (CAS 167842-64-0)
- Lusutrombopag Impurity 79 (CAS CATO-C4X-208479)
- Methyl 3-(4-aminophenoxy)benzoate hydrochloride (CAS 790262-20-3)
- 2-Morpholinomethyl-4-thiomethylbenzophenone (CAS 898750-26-0)
- Tetrahydrofuran-3-sulfonyl Chloride (CAS 1207346-29-9)
- 2-((2,6-Dichlorophenyl)amino)thiazol-4(5H)-one (CAS 324578-32-7)
- 4-Pyridinebutanoic acid, α-amino-, (αR)- (CAS 1240585-69-6)
- 1-(3-Bromophenyl)-1,2,4-triazole (CAS 375857-96-8)
- Peptide Impurity 05 (CAS 2322924-83-2)
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