Cephalexin Impurity 40 CAS CATO-C4X-126140
| CAS No. | CATO-C4X-126140 |
| Molecular Formula | C31H34N6O6S2 |
| Molecular Weight | 650.77 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 Cephalexin Impurity 40.
As a process- or degradation-related impurity, Cephalexin Impurity 40 (CAS CATO-C4X-126140, C31H34N6O6S2) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Cephalexin Impurity 40 (C31H34N6O6S2) 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 40 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 | C31H34N6O6S2 |
| Molecular Weight | 650.77 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) | 18.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Cephalexin Standards
- Cephalexin Impurity 37 (CAS CATO-C4X-126137)
- Cephalexin Impurity 36 (CAS CATO-C4X-126136)
- 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 41 (CAS CATO-C4X-126141)
- Cephalexin Impurity 23 (CAS CATO-C4X-126123)
Recommended Standards
- Belumosudil Impurity 69 (CAS CATO-C4X-298869)
- 2-(o-Methoxy)-4,5-diphenylimidazole-1,2'-dimer (CAS 1831-70-5)
- Biotinylamidoethyl]-dithiomethylenemalonic Acid Bis(3-aminopropionic Acid) (CAS 1217630-39-1)
- Naloxonazine dihydrochloride (CAS 82824-01-9)
- Tadalafil Impurity 82 (CAS CATO-C4X-108782)
- Hydrocortisone Impurity 59 (CAS CATO-C4X-140159)
- Decitabine Impurity 11 (CAS CATO-C4X-113711)
- Ethyl 2-amino-3-(4-fluorophenyl)propanoate (CAS 191930-41-3)
- 2-(1h-1,2,4-Triazol-1-yl)phenol (CAS 1340463-49-1)
- (2-Nitrophenyl)methanesulfonyl Chloride (CAS 24974-75-2)
- 1-2-O-Isopropylidene-5-O-pivaloyl-α-D-glucofuranosiduronoic acid-6-3-lactone (CAS 78748-89-7)
- 1-|A-D-Glucopyranuronosyl-3-[1-hydroxy-4-(methylnitrosoamino)butyl]pyridinium Inner Salt 350508-29-1 4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanol N-|A-D-Glucuronide NNAL-N-|A-D-Glucuronide (CAS 350508-29-1)
- 2-Iodo-4-nitrophenylacetonitrile (CAS 1261569-99-6)
- Tirzepatide Impurity 45 (CAS CATO-C4X-324045)
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