Cephalexin Impurity 36 CAS CATO-C4X-126136
| CAS No. | CATO-C4X-126136 |
| Molecular Formula | C33H33N5O7S2 |
| Molecular Weight | 675.77 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 675.77 g/mol gives Cephalexin Impurity 36 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Cephalexin Impurity 36 (CAS CATO-C4X-126136, C33H33N5O7S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C33H33N5O7S2, Cephalexin Impurity 36 contains a nitrogen-containing heterocyclic scaffold, 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 675.77 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), Cephalexin Impurity 36 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C33H33N5O7S2 |
| Molecular Weight | 675.77 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) | 20.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cephalexin Standards
- Cephalexin Dimer (CAS CATO-C4X-126111)
- Cephalexin Impurity 24 (CAS CATO-C4X-126124)
- Cephalexin Impurity 38 (CAS CATO-C4X-126138)
- Cephalexin Impurity 39 (CAS CATO-C4X-126139)
- Cephalexin Impurity 37 (CAS CATO-C4X-126137)
- Cephalexin Impurity 40 (CAS CATO-C4X-126140)
- Cephalexin Impurity 41 (CAS CATO-C4X-126141)
- Cephalexin Impurity 23 (CAS CATO-C4X-126123)
Recommended Standards
- Posaconazole Impurity 38 (CAS CATO-C4X-120838)
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- Dabigatran Impurity 72 (CAS 637238-96-0)
- Sitagliptin Tablets EP Impurity FP-A (CAS 2088771-60-0)
- Ropivacaine EP Impurity E(R-Isomer) (CAS 1050482-18-2)
- Triptorelin Impurity 10 (CAS CATO-C4X-186210)
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- 2-methyl-2-(morpholin-4-yl)butan-1-amine (CAS 914206-26-1)
- Semaglutide impurity 99 (CAS CATO-C4X-222699)
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