Cefoperazone EP Impurity D CAS 37539-03-0
| CAS No. | 37539-03-0 |
| Molecular Formula | C10H11N5O3S2 |
| Molecular Weight | 313.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Cefoperazone 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.
Cefoperazone EP Impurity D (CAS 37539-03-0) is a certified pharmaceutical impurity reference standard with the molecular formula C10H11N5O3S2 and a molecular weight of 313.36 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefoperazone EP Impurity D is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 313.36 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.
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 | C10H11N5O3S2 |
| Molecular Weight | 313.36 g/mol |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Cefoperazone Standards
- Cefoperazone Impurity N1 (CAS 58016-87-8)
- Cefoperazone Impurity 23 (CAS CATO-C4X-114923)
- Cefoperazone Impurity 24 (CAS CATO-C4X-114924)
- Cefoperazone Impurity 35 (CAS CATO-C4X-114935)
- Cefoperazone Impurity 7 (CAS 24209-38-9)
- Cefoperazone Impurity 15 (CAS 348088-68-6)
- Cefoperazone Impurity 22 (CAS 62893-24-7)
- Cefoperazone Impurity 34 (CAS CATO-C4X-114934)
Recommended Standards
- 7-(4-(2,5-Dimethyl-1H-pyrrol-1-yl)phenyl)pyrazolo[1,5-a]pyrimidine-3-carbonitrile (CAS 865658-61-3)
- S-(-)-Warfarin-d5 (CAS 791013-22-4)
- 6-(2-(Pyridin-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl)quinoxaline (CAS 705262-76-6)
- Warfarin-d5 (CAS 75472-93-4)
- Piperazine Impurity 27 (CAS 7040-23-5)
- Tadalafil Impurity 150 (CAS 2361527-35-5)
- Nifedipine Impurity 22 (CAS CATO-C4X-141022)
- 2-Bromoheptafluoropropane (CAS 422-77-5)
- 6-(2,5-Dimethoxyphenyl)-3-(pyrrolidin-2-yl)-[1,2,4]triazolo[4,3-b]pyridazine (CAS 1706437-65-1)
- (R)-1-(3-Chloro-5-fluorophenyl)ethane-1,2-diamine (CAS 1213069-52-3)
- tert-Butyl 5-oxo-1,4,9-triazaspiro[5.5]undecane-1-carboxylate (CAS 1383575-15-2)
- 4,5-Bis(hexylthio)-1,3-dithiole-2-thione (CAS 149468-17-7)
- (1R,4r)-4-(((benzyloxy)carbonyl)amino)cyclohexyl acetate (CAS 2095396-46-4)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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