Cefalexin Impurity 48 CAS CATO-C4X-126148
| CAS No. | CATO-C4X-126148 |
| Molecular Formula | C32H34N6O8S2 |
| Molecular Weight | 694.78 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 Cefalexin Impurity 48.
CATO supplies Cefalexin Impurity 48 (CAS CATO-C4X-126148), a pharmacopoeial impurity reference standard (molecular formula C32H34N6O8S2, MW 694.78 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Cefalexin Impurity 48 (C32H34N6O8S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 19.0, corresponding to approximately 19 ring(s) or double-bond equivalent(s). With a molecular weight of 694.78 g/mol, it falls into the high-molecular-weight range. 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.
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 | C32H34N6O8S2 |
| Molecular Weight | 694.78 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) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 2 |
Related Cefalexin Standards
- Cefalexin Impurity 43 (CAS CATO-C4X-126143)
- Cefalexin Impurity 46 (CAS CATO-C4X-126146)
- Cefalexin Impurity 50 (CAS CATO-C4X-126150)
- Cefalexin Impurity 49 (CAS CATO-C4X-126149)
- Cefalexin Monohydrate EP Impurity F (CAS CATO-C4X-122442)
- Cefalexin EP Impurity F (CAS 79750-46-2)
- Cefalexin (CAS 15686-71-2)
- Cefalexin Impurity 30 (CAS 65870-51-1)
Recommended Standards
- Cephalexin Impurity 39 (CAS CATO-C4X-126139)
- Daurisoline Diacetate (CAS 132139-17-4)
- Cephalexin Impurity 38 (CAS CATO-C4X-126138)
- 3-(Dec-9-en-1-yl)dihydrofuran-2,5-dione (CAS 26000-16-8)
- Maxacalcitol Impurity 45 (CAS 227961-44-6)
- Topiroxostat Impurity 5 (CAS 6975-73-1)
- Metaraminol Impurity 109 (CAS CATO-C4X-2252109)
- 4-Bromomethyl-2-chloro-5-(trifluoromethyl)pyridine (CAS 1227583-92-7)
- Urapidil Impurity 76 HBr (CAS 100939-96-6)
- 3-Bromo-4-chloro-7,8-difluoroquinoline (CAS 1204811-78-8)
- 7-Methoxy-1,2-dihydroisoquinolin-3(4H)-one (CAS 1023300-22-2)
- 4,6-Dioxoheptanenitrile (CAS 127528-53-4)
- (SP-4-4)-[N-[[5-Chloro-2-[[[(1R,2S)-1-(phenylmethyl)-2-pyrrolidinyl-κN]carbonyl]amino-κN]phenyl]phenylmethylene]glycinato(2-)-κN,κO]nickel (CAS 222041-55-6)
- Mast Cell Degranulating (MCD) Peptide HR-2 (CAS 80388-04-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com