Cefepime EP Impurity D CAS 65872-41-5
| CAS No. | 65872-41-5 |
| Molecular Formula | C6H7N3O3S |
| Molecular Weight | 201.20 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Cefepime EP Impurity D (CAS 65872-41-5), a pharmacopoeial impurity reference standard (molecular formula C6H7N3O3S, MW 201.20 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system, Cefepime EP Impurity D is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 201.20 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
CATO manufactures Cefepime EP Impurity D 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.
Physical & Chemical Properties
| Molecular Formula | C6H7N3O3S |
| Molecular Weight | 201.20 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefepime Standards
- Cefepime Dihydrochloride Monohydrate EP Impurity C (CAS CATO-C4X-135863)
- Cefepime Impurity C08 (CAS 51813-38-8)
- Cefepime Impurity 29 (CAS 110-56-5)
- Cefepime Dihydrochloride Monohydrate EP Impurity E (CAS 103296-32-8)
- Cefepime Impurity 1 (CAS 120-94-5)
- Cefepime Impurity 5 (CAS 84994-24-1)
- Cefepime EP Impurity E (CAS 110026-16-9)
- Cefepime EP Impurity D Potassium Salt (CAS 112097-97-9)
Recommended Standards
- Celecoxib Impurity 62 (CAS CATO-C4X-104362)
- (E)-Cefotaxime Impurity 25 (CAS 66341-09-1)
- Celecoxib Impurity 27 (CAS 343853-74-7)
- Ceftazidime Impurity 83 (CAS CATO-C4X-121283)
- Opicapone Impurity 49 (CAS CATO-C4X-240449)
- Orforglipron impurity 122 (CAS CATO-C4X-3234122)
- Tucatinib Impurity 57（E-Isomer） (CAS CATO-C4X-260557)
- GCN2-IN-1 (CAS 1448693-69-3)
- 5,7-Dichloro-1,2,3,4-tetrahydroquinoline (CAS 73253-30-2)
- (3AR,6aS)-5-benzyl-2-phenyl-octahydropyrrolo[3,4-c]pyrrole-1,3-dione (CAS 87813-00-1)
- (S)-1-((6-chloropyridin-3-yl)methyl)pyrrolidin-3-ol (CAS 764715-21-1)
- 4-Chloro-n-propylbutanamide (CAS 543717-62-0)
- [2-(prop-2-en-1-yloxy)phenyl]methanamine (CAS 161562-67-0)
- Semaglutide (CAS 910463-68-2（free base）)
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