Cefazolin Impurity 67 CAS CATO-C4X-157767
| CAS No. | CATO-C4X-157767 |
| Molecular Formula | C14H16N8O5S3 |
| Molecular Weight | 472.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C14H16N8O5S3, Cefazolin Impurity 67 contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 472.52 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Cefazolin Impurity 67 (CAS CATO-C4X-157767), a pharmacopoeial impurity reference standard (molecular formula C14H16N8O5S3, MW 472.52 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
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 | C14H16N8O5S3 |
| Molecular Weight | 472.52 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 8 |
| Sulfur Atoms | 3 |
Related Cefazolin Standards
- Cefazolin Impurity 12 (CAS CATO-C4X-157712)
- Cefazolin Impurity 16 (CAS CATO-C4X-157716)
- Cefazolin Impurity 22 (CAS CATO-C4X-157722)
- Cefazolin EP Impurity I（Cefazolin USP RC L） (CAS 1675244-99-1)
- Cefazolin Impurity 30 (CAS CATO-C4X-157730)
- Cefazolin Impurity 52 (CAS CATO-C4X-157752)
- Cefazolin Impurity 69 (CAS CATO-C4X-157769)
- Cefazolin Impurity 71 (CAS CATO-C4X-157771)
Recommended Standards
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- 4A-methyl-4,4a,5,6-tetrahydronaphthalen-2(3H)-one (CAS 10271-07-5)
- Gadobutrol Impurity 188 (CAS CATO-C4X-2120188)
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- Metformin Impurity 19 (CAS CATO-C4X-122019)
- (S)-2-((3-Sulfopropyl)amino)propanoic acid (CAS 819863-37-1)
- (5-((1,4-Dioxa-8-azaspiro[4.5]Decan-8-yl)sulfonyl)-2-methoxyphenyl)boronic acid (CAS 1704095-38-4)
- [S(R)]-N-[(R)-[2-(Diadamantanphosphino)phenyl]phenylmethyl]-2-methyl-2-propanesulfinamide (CAS 2565792-31-4)
- 2-Isopropoxy-5-methylphenylboronic acid (CAS 480438-71-9)
- 2-Propenoic acid, polymer with 2-methyloxirane (CAS 71060-76-9)
- 877874-79-8 4-{5-[3-(Trifluoromethyl)anilino]-1,2-dihydro-3H-1,2,4-triazol-3-ylidene}cyclohexa-2,5-dien-1-one DTXSID20731086 (CAS 877874-79-8)
- Semaglutide impurity 41 (CAS CATO-C4X-222641)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com