Biapenem impurity 31 CAS CATO-C4X-227331
| CAS No. | CATO-C4X-227331 |
| Molecular Formula | C17H24N4O5S |
| Molecular Weight | 396.46 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C17H24N4O5S, Biapenem impurity 31 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 396.46 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).
CATO supplies Biapenem impurity 31 (CAS CATO-C4X-227331), a pharmacopoeial impurity reference standard (molecular formula C17H24N4O5S, MW 396.46 g/mol) used for the identification and quantification of trace impurities in APIs.
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 | C17H24N4O5S |
| Molecular Weight | 396.46 g/mol |
| Purity | ＞90% |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Biapenem Standards
- Biapenem impurity 30 (CAS CATO-C4X-227330)
- Biapenem impurity 11 (CAS CATO-C4X-227311)
- Biapenem Impurity 23 (CAS CATO-C4X-227323)
- Biapenem impurity 7（Isomer Mixture） (CAS CATO-C4X-22737)
- Biapenem impurity 12 (CAS CATO-C4X-227312)
- Biapenem impurity 16 (CAS CATO-C4X-227316)
- Biapenem impurity 1 (CAS CATO-C4X-22731)
- Biapenem Impurity 24 (CAS CATO-C4X-227324)
Recommended Standards
- Mitapivat Impurity 1 (CAS 1260081-87-5)
- Roxadustat Impurity 67 (CAS CATO-C4X-221367)
- m-PEG7-CH2CH2CHO (CAS 1234369-95-9)
- Cefmetazole Impurity 45 (CAS CATO-C4X-150745)
- Atrasentan Impurity 74 (CAS 1058540-33-2)
- Hydantoin Impurity 2 (CAS 49540-21-8)
- Elagolix Impurity 82 (CAS CATO-C4X-206882)
- 2-((4-Fluorophenyl)sulfonyl)-1H-indole (CAS 683203-80-7)
- (2E)-3-[4-(2-Methylpropyl)phenyl]-N-(2,4,5-trifluorophenyl)prop-2-enamide (CAS 329778-62-3)
- Ertapenem impurity 46 (CAS CATO-C4X-163346)
- 1,2-Distearoyl-sn-glycero-3-phosphocholine (CAS 816-94-4)
- 4-Propyl-4H-furo[3,2-b]pyrrole-5-carboxylic acid (CAS 1192961-99-1)
- (S)-2-((tert-Butoxycarbonyl)amino)-2,4-dimethylpentanoic acid (CAS 1149354-06-2)
- Semaglutide impurity 33 (CAS CATO-C4X-222633)
Why CATO?
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