Cephalexin Impurity 28 CAS 142975-48-2
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 142975-48-2 |
| Molecular Formula | C11H10N2O3 |
| Molecular Weight | 218.21 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Cephalexin Impurity 28 (CAS 142975-48-2) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C11H10N2O3. Molecular weight: 218.21 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C11H10N2O3 |
| Molecular Weight | 218.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 2 |
Related Cephalexin Standards
- Cephalexin Impurity 27 (CAS CATO-C4X-126127)
- Cephalexin Impurity 34 (CAS CATO-C4X-126134)
- Cephalexin Impurity 35 (CAS CATO-C4X-126135)
- Cephalexin Impurity 33 (CAS 883835-57-2)
- Cephalexin Impurity 20 (CAS CATO-C4X-126120)
- Cephalexin Impurity 12 (CAS 65870-52-2)
- Cephalexin Impurity 18 (CAS 34632-04-7)
- Cephalexin Impurity 25 (CAS CATO-C4X-126125)
Recommended Standards
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- Indoxacarb Impurity 7 (CAS 144171-39-1)
- 9,10-Dihydro-9,10-bis(2-carboxyethyl)-N-(4-nitrophenyl)-10,9-(epoxyimino)anthracene-12-carboxamide (CAS 1225023-87-9)
- Endo-[Glu]31-Liraglutide (CAS CATO-C4X-199234)
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 13829788188 / jacky.chen@cato-chem.com