Cefalexin EP Impurity F CAS 79750-46-2
| CAS No. | 79750-46-2 |
| Molecular Formula | C16H17N3O4S |
| Molecular Weight | 347.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Cefalexin EP Impurity F under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies Cefalexin EP Impurity F (CAS 79750-46-2), a pharmacopoeial impurity reference standard (molecular formula C16H17N3O4S, MW 347.39 g/mol) used for the identification and quantification of trace impurities in APIs.
The molecular framework of Cefalexin EP Impurity F (C16H17N3O4S) is characterized by a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | C16H17N3O4S |
| Molecular Weight | 347.39 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefalexin Standards
- Cefalexin Monohydrate EP Impurity F (CAS CATO-C4X-122442)
- Cefalexin (CAS 15686-71-2)
- Cefalexin Impurity 49 (CAS CATO-C4X-126149)
- Cefalexin Impurity 50 (CAS CATO-C4X-126150)
- Cefalexin Impurity 46 (CAS CATO-C4X-126146)
- Cefalexin Impurity 30 (CAS 65870-51-1)
- Cefalexin Impurity 45 (CAS CATO-C4X-126145)
- Cefalexin Impurity 43 (CAS CATO-C4X-126143)
Recommended Standards
- Cephalexin Impurity 25 (CAS CATO-C4X-126125)
- Cephalexin Impurity 7 (Mixture Of Isomers) (CAS 59865-11-1)
- Cephalexin Impurity 18 (CAS 34632-04-7)
- Cefaclor EP Impurity G-Isomer 1 (CAS 67308-21-8)
- Abiraterone Impurity 58 (CAS 2484719-09-5)
- Memantine Impurity 45 (CAS CATO-C4X-105845)
- Suzetrigine Impurity 50 (CAS CATO-C4X-336950)
- 1-Glycylpiperidine-4-carboxamide hydrochloride (CAS 1210438-52-0)
- Methyl 3-amino-3-(4-methoxyphenyl)propanoate hydrochloride (CAS 124082-17-3)
- (4-Formyl-3-methylphenyl)boronic acid (CAS 398151-59-2)
- Ambroxol Impurity N1 (CAS 46727-91-7)
- Butyl 2-hydroxy-4-oxoheptanoate (CAS 166947-82-6)
- (4-(Aminomethyl)phenyl)(3,5-dimethylpiperidin-1-yl)methanone (CAS 923673-19-2)
- Tirzepatide Impurity 35 (CAS CATO-C4X-324035)
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