Tiotropium Bromide Impurity 18 CAS 51-56-9
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 51-56-9 |
| Molecular Formula | C16H21NO3 HBr |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
High-purity Tiotropium Bromide Impurity 18 (CAS 51-56-9) pharmacopoeial impurity standards reference standard. Molecular formula: C16H21NO3 HBr. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C16H21NO3 HBr |
| Molecular Weight | 356.26 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Tiotropium Standards
- Tiotropium Impurity 26 (CAS 10299-90-8)
- Tiotropium Bromide Impurity 8 Potassium Salt (CAS 10304-09-3)
- Tiotropium Bromide EP Impurity H (Mixture of Enantiomers) (CAS 1044148-31-3)
- Tiotropium Bromide EP Impurity H-d3 Bromide (Mixture of Enantiomers) (CAS 1044148-31-3（unlabeled）)
- Tiotropium-d6 (CAS 1126775-44-7)
- Tiotropium-D3 Bromide (CAS 1127226-56-5)
- Tiotropium Bromide EP Impurity B (CAS 136310-64-0)
- Tiotropium EP Impurity D (CAS 136310-66-2)
Recommended Standards
- Doxepin impurity 17 (CAS 22684-91-9)
- Sunitinib Impurity 81 (CAS CATO-C4X-133381)
- 3,4-Dimethyl 1h-pyrrole-3,4-dicarboxylate (CAS 2818-06-6)
- Hydroxychloroquine Impurity 31 (CAS CATO-C4X-183531)
- 2-Hydroxy-5-((4-methyl-5-(4-methylbenzyl)-6-oxo-1,6-dihydropyrimidin-2-yl)amino)benzoic acid (CAS 1417636-79-3)
- N-phenyl-5-(1-tosylpyrrolidin-2-yl)pyridin-2-amine (CAS 1352499-74-1)
- Endo-38a-Pro-Exenatide trifluoroacetate salt (CAS 1678416-95-9)
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