(RS+SR)-Formoterol Impurity 80 Hemifumarate CAS 143687-26-7
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 143687-26-7 |
| Molecular Formula | 2*C33H36N2O4 C4H4O4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order (RS+SR)-Formoterol Impurity 80 Hemifumarate (CAS 143687-26-7) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: 2*C33H36N2O4 C4H4O4. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | 2*C33H36N2O4 C4H4O4 |
| Molecular Weight | 640.73 g/mol |
| Purity | >95% |
| 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) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Nitrogen Atoms | 2 |
Recommended Standards
- Baricitinib Impurity 137 (CAS CATO-C4X-2260137)
- Dalbavancin Impurity 32 (CAS CATO-C4X-160232)
- 2-(Ethylthio)benzaldehyde (CAS 53606-33-0)
- Ornidazole Impurity 91 (CAS CATO-C4X-133191)
- 2-(5-Bromo-2-methylbenzo[d]oxazol-7-yl)acetonitrile (CAS 1708168-02-8)
- (-)-Oxypeucedanin hydrate (CAS 133164-11-1)
- Semaglutide impurity 107 (CAS CATO-C4X-2226107)
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