Tiotropium Impurity 28 CAS 59516-66-4
Purity >90%In StockPharmacopoeial Impurity Standards
| CAS No. | 59516-66-4 |
| Molecular Formula | C4H2O7 |
| Molecular Weight | 162.05 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Order Tiotropium Impurity 28 (CAS 59516-66-4) pharmacopoeial impurity standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C4H2O7. Molecular weight: 162.05 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C4H2O7 |
| Molecular Weight | 162.05 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >90% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1974 |
Related Tiotropium Standards
- Tiotropium impurity N1 (CAS 487-27-4)
- Tiotropium Bromide Impurity 19 (CAS 498-46-4)
- Tiotropium Bromide Impurity 33 (CAS 498-45-3)
- Tiotropium Impurity 26 (CAS 10299-90-8)
- Tiotropium Bromide Impurity 32 (CAS 1570-95-2)
- Tiotropium Impurity 29 (CAS 213967-57-8)
- Tiotropium Bromide Impurity 17 (CAS CATO-C4X-176417)
- Tiotropium Impurity 34 (CAS 169219-67-4)
Recommended Standards
- Propanedioic acid, 2-methyl-, sodium salt (1:2) (CAS 53007-37-7)
- Methyl pentafluoroethyl ketone (CAS 374-41-4)
- Drying pearls Orange (CAS 1327-36-2)
- Pitavastatin Impurity 13 (CAS 1611499-16-1(free base))
- Vericiguat Impurity 21 (CAS CATO-C4X-289621)
- 2-Ethoxy-4-oxo-1,4-dihydroquinoline-3-carbonitrile (CAS 154014-47-8)
- N-[1-(2,5-Dimethoxyphenyl)ethyl]-1-methyl-1H-pyrazol-4-amine (CAS 1153754-43-8)
- 2-(3-Methyl-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-4-yl)acetic acid (CAS 1782817-05-3)
- Upadacitinib Impurity 1 (CAS CATO-C4X-24051)
- Semaglutide Impurity 188 (CAS CATO-C4X-2226188)
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