Ceftazidime Impurity 63 CAS CATO-C4X-121263
| CAS No. | CATO-C4X-121263 |
| Molecular Formula | C66H62N18O19S6 |
| Molecular Weight | 1603.70 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 supplies Ceftazidime Impurity 63 (CAS CATO-C4X-121263), a pharmacopoeial impurity reference standard (molecular formula C66H62N18O19S6, MW 1603.70 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Ceftazidime Impurity 63 is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 1603.70 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C66H62N18O19S6 |
| Molecular Weight | 1603.70 g/mol |
| Purity | 97%+ |
| 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) | 45.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 18 |
| Sulfur Atoms | 6 |
Related Ceftazidime Standards
- Ceftazidime trimer 1 (CAS CATO-C4X-121270)
- Ceftazidime trimer 2 (CAS CATO-C4X-121271)
- Ceftazidime trimer 3 (CAS CATO-C4X-121272)
- Ceftazidime Impurity 77 (CAS CATO-C4X-121277)
- Ceftazidime Impurity 76 (CAS CATO-C4X-121276)
- Ceftazidime impurity 115 (CAS CATO-C4X-1212115)
- Ceftazidime impurity 122 (CAS CATO-C4X-1212122)
- Ceftazidime dimer 1 (CAS CATO-C4X-121264)
Recommended Standards
- Dynorphin A (1-13) amide (CAS 79515-34-7)
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- [DArg6] Dynorphin A (1-13), porcine (CAS 75921-87-8)
- Phytomenadione/Vitamin K1 Impurity 86 (CAS CATO-C4X-220786)
- Decitabine Impurity 31 (CAS 1034301-08-0)
- Tetracaine Impurity 42 (CAS CATO-C4X-192342)
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- 4-Chloro-2-phenyl-8-(trifluoromethoxy)quinoline (CAS 1189106-99-7)
- (3r,4r)-4-(7-methoxy-2-oxo-2h-chromen-8-yl)-2-methyl-1-butene-3,4 -diyl Diacetate 51650-59-0 (CAS 51650-59-0)
- 4-Chloro-5-iodo-2-phenylpyridine (CAS 1805038-02-1)
- 4-Bromo-3-(ethylsulfonyl)benzenesulfonyl chloride (CAS 1354954-42-9)
- Tetrapeptide-30/Tegopep (CAS 1036207-61-0)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com