Clarithromycin Impurity 21 CAS 18423-89-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 18423-89-7 |
| Molecular Formula | C8H16O4 |
| Molecular Weight | 176.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity Clarithromycin Impurity 21 (CAS 18423-89-7) pharmaceutical standards reference standard. Molecular formula: C8H16O4. Molecular weight: 176.21 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C8H16O4 |
| Molecular Weight | 176.21 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1962 |
Related Clarithromycin Standards
- Clarithromycin Impurity 23 (CAS 470-12-2)
- Clarithromycin Impurity 3 (CAS 42008-54-8)
- Clarithromycin Lactobionate (CAS 135326-55-5)
- Clarithromycin EP Impurity J(Roxithromycin EP Impurity C) HCl (CAS 145645-54-1)
- Clarithromycin EP Impurity K HCl (CAS 127157-35-1（free base）)
- Clarithromycin Impurity 28 (CAS CATO-C4X-100228)
- Clarithromycin impurity 16(See C4X-100217) (CAS CATO-C4X-100216)
- Clarithromycin EP Impurity K (CAS 127157-35-1)
Recommended Standards
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- 5-Nitro-2-[4-(trifluoromethyl)phenoxy]benzaldehyde (CAS 217186-17-9)
- 4-Cyclopropoxy-N,N,2-trimethylnicotinamide (CAS 1243311-12-7)
- 1-Bromo-4-chloro-3-(difluoromethoxy)-2-fluorobenzene (CAS 943830-25-9)
- Nimodipine impurity 24 (CAS CATO-C4X-138524)
- 2-(2-(2-Chloro-4-(trifluoromethyl)phenoxy)ethyl)-1,3-dioxolane (CAS 1443303-07-8)
- Des-Gly29,30-Tirzepatide (CAS CATO-CPTD788944)
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