Cefazolin Impurity 63 CAS CATO-C4X-157763
| CAS No. | CATO-C4X-157763 |
| Molecular Formula | C10H13N3O7S |
| Molecular Weight | 319.29 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 319.29 g/mol gives Cefazolin Impurity 63 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
As a process- or degradation-related impurity, Cefazolin Impurity 63 (CAS CATO-C4X-157763, C10H13N3O7S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Cefazolin Impurity 63 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 319.29 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).
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.
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 | C10H13N3O7S |
| Molecular Weight | 319.29 g/mol |
| Purity | 97%+ |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Cefazolin Standards
- Cefazolin Impurity 61 (CAS CATO-C4X-157761)
- Cefazolin EP Impurity G (CAS 1172998-53-6)
- Cefazolin EP Impurity C (CAS 56842-77-4)
- Cefazolin 3-Hydroxymethyl Impurity Sodium Salt (CAS 50971-65-8)
- Cefazolin Impurity 11 (CAS 478494-71-2)
- Cefazolin EP Impurity J (CAS 1675245-00-7)
- Cefazolin USP Related Compound D(Diastereoisomer Mixture) (CAS 1675245-01-8)
- Cefazolin Impurity 89 (CAS CATO-C4X-157789)
Recommended Standards
- 2-((2-Isopropyl-4-(trifluoromethyl)-2h-pyrazolo[3,4-b]pyridin-6-yl)thio)acetic acid (CAS 1018046-67-7)
- 3-(difluoromethyl)-5-([(3,5-dimethyl-4-nitro-1h-pyrazol-1-yl)methyl]sulfanyl)-4h-1,2,4-triazol-4-ami 3-(difluoromethyl)-5-([(3,5-dimethyl-4-nitro-1h-pyrazol-1-yl)methyl]thio)-4h-1,2,4-triazol-4-amine 3-Difluoromethyl-5-(3,5-dimethyl-4-nitropyrazol-1-ylmethylsulfanyl)-[1,2,4]triazol-4-ylamine 3-difluoromethyl-5-(3,5-dimethyl-4-nitro-pyrazol-1-ylmethylsulfanyl)-[1,2,4]triazol-4-ylamine 925179-62-0 (CAS 925179-62-0)
- {[2-propyl-4-(trifluoromethyl)-2H-pyrazolo[3,4-b]pyridin-6-yl]thio}acetic acid (CAS 1018046-87-1)
- tert-Butyl 8-fluoro-7-(trifluoromethyl)-3,4-dihydroisoquinoline-2(1H)-carboxylate (CAS 2757409-73-5)
- Butenafine Impurity 9 (CAS CATO-C4X-15969)
- Relugolix Impurity 66 (CAS CATO-C4X-242966)
- Lifitegrast Impurity 61 (CAS CATO-C4X-240961)
- tert-butyl (3R,4S)-3-azido-4-hydroxy-pyrrolidine-1-carboxylate (CAS 1374429-79-4)
- 6,8-dibromo-3-(4-fluorophenyl)-3,4-dihydro-2H-1,3-benzoxazine (CAS 478040-89-0)
- 2-(Difluoromethyl)-4-iodo-5-methylpyridine-3-acetic acid (CAS 1805548-77-9)
- 5-Ethyl-N-(4-methoxyphenyl)-1,3,4-thiadiazol-2-amine (CAS 61955-52-0)
- 1,2-Bis(4-(bromomethyl)phenyl)ethane-1,2-dione (CAS 21514-58-9)
- Butenafine Impurity 5 (CAS 101828-08-4)
- Des-Ala35-Tirzepatide (CAS CATO-CPTD788939)
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