Metoprolol EP Impurity B CAS 56718-71-9
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 56718-71-9 |
| Molecular Formula | C9H12O2 |
| Molecular Weight | 152.19 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Metoprolol EP Impurity B (CAS 56718-71-9), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C9H12O2. Molecular weight: 152.19 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C9H12O2 |
| Molecular Weight | 152.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related Metoprolol Standards
- Metoprolol Impurity 12 (CAS 32846-01-8)
- Metoprolol Impurity 23 (CAS 330976-39-1)
- Metoprolol Process Impurity 4 (CAS 84803-56-5)
- Metoprolol EP Impurity G (CAS 501-94-0)
- Metoprolol EP Impurity N (CAS 6452-57-9)
- Metoprolol Impurity 31 (CAS 942499-01-6)
- Metoprolol Impurity 37 (CAS 488-17-5)
- Metoprolol Impurity 26 (CAS 69628-98-4)
Recommended Standards
- Umeclidinium impurity 23 (CAS 622-08-2)
- Pregabalin Impurity 66 (CAS 143420-53-5)
- Rivastigmine EP Impurity G (CAS 23308-82-9)
- S-Adenosyl-L-Methionine Impurity 17 (CAS 2095880-61-6)
- FCN437 Impurity 2 (CAS CATO-C4X-33242)
- trans-3-O-Caffeoylshikimic Acid (CAS 180981-12-8)
- 4-Methylene-3,5-diphenyl-5-(1,2,2-trimethylhydrazinyl)-4,5-dihydroisoxazole (CAS 62033-10-7)
- 3-(propan-2-yl)cyclopentan-1-one (CAS 10264-56-9)
- (3aS,7aR)-5,5-Difluorooctahydro-1H-Indene (CAS 22578-06-9)
- Semaglutide impurity 248 (CAS CATO-C4X-2226248)
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