Isosorbide Impurity 21 CAS 28218-55-5
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 28218-55-5 |
| Molecular Formula | C6H12O5 |
| Molecular Weight | 164.16 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Isosorbide Impurity 21 (CAS 28218-55-5) is a high-purity pharmacopoeial impurity standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C6H12O5. Molecular weight: 164.16 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C6H12O5 |
| Molecular Weight | 164.16 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1965 |
Related Isosorbide Standards
- Isosorbide Impurity 23 (CAS 45895-44-1)
- Isosorbide Impurity 24 (CAS 52485-66-2)
- Isosorbide Dimethyl Ether (CAS 5306-85-4)
- Isosorbide Dinitrate 19 (CAS 1932354-37-4)
- Isosorbide Dinitrate Impurity 20 (CAS 175220-76-5)
- Isosorbide (CAS 652-67-5)
- Isosorbide Dinitrate Impurity 9 (CAS 13241-36-6)
- Isosorbide Dinitrate Impurity 5 (CAS 13042-39-2)
Recommended Standards
- Lenalidomide Impurity 70 (CAS CATO-C4X-190370)
- Butylphthalide Impurity 16 (CAS 577-56-0)
- Glycopyrronium Bromide EP Impurity H (CAS 15206-55-0)
- Letrozole Impurity 17 (CAS 112809-27-5)
- Roxadustat Impurity 32 Formate (CAS CATO-C4X-221332)
- Temozolomide Impurity 17 (CAS CATO-C4X-135317)
- 1-Bromo-3-(bromomethyl)-5-iodobenzene (CAS 1261553-05-2)
- N1-(2-(3,5-Dimethyl-1H-pyrazol-1-yl)ethyl)-N2-(5-methylisoxazol-3-yl)oxalamide (CAS 1208638-43-0)
- 2-(3-Methylphenyl)propanoic acid (CAS 73721-06-9)
- Tirzepatide Impurity 23 X TFA Salt (CAS CATO-C4X-324023)
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