Biapenem impurity 18 CAS CATO-C4X-227318
| CAS No. | CATO-C4X-227318 |
| Molecular Formula | C30H38N8O8S2 |
| Molecular Weight | 702.80 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies Biapenem impurity 18 (CAS CATO-C4X-227318), a pharmacopoeial impurity reference standard (molecular formula C30H38N8O8S2, MW 702.80 g/mol) used for the identification and quantification of trace impurities in APIs.
Biapenem impurity 18 (C30H38N8O8S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C30H38N8O8S2 |
| Molecular Weight | 702.80 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 2 |
Related Biapenem Standards
- Biapenem impurity 19 (CAS CATO-C4X-227319)
- Biapenem impurity 2 (CAS CATO-C4X-22732)
- Biapenem Impurity 22 (CAS CATO-C4X-227322)
- Biapenem impurity 3 (CAS CATO-C4X-22733)
- Biapenem impurity 35 (CAS 1080648-58-3)
- Biapenem impurity 8 (CAS CATO-C4X-22738)
- Biapenem impurity 9 (CAS CATO-C4X-22739)
- Biapenem impurity 17 (CAS CATO-C4X-227317)
Recommended Standards
- Linagliptin Impurity 45 (CAS CATO-C4X-110145)
- Fluphenazine Dihydrochloride EP Impurity C (CAS 2518011-27-1)
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- Amisulpride Impurity 39 (CAS CATO-C4X-104539)
- Bilastine Impurity 49 (CAS 2767509-01-1)
- Sitagliptin Impurity 125 (CAS 877402-45-4)
- 3-((4-(Dimethylamino)butan-2-yl)amino)thietane 1,1-dioxide (CAS 1880283-51-1)
- Vecuronium EP Impurity E (CAS 784988-81-4)
- 2-Chloro-4-[4-(trifluoromethyl)phenyl]-1,3-thiazole (CAS 945860-88-8)
- Disperse Yellow 7 (CAS 6300-37-4)
- 4-(4-(2-aminoethyl)-2,6-diiodophenoxy)-2,6-diiodophenol (CAS 3571-49-1)
- 2',5'-Bis(allyloxy)-[1,1':4',1''-terphenyl]-4,4''-dicarboxylicacid (CAS 1656308-53-0)
- Semaglutide Impurity 15 (CAS CATO-C4X-222615)
Why CATO?
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