Ipratropium Bromide Impurity 33 CAS 2784-21-6
| CAS No. | 2784-21-6 |
| Molecular Formula | C20H30NO3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Ipratropium Bromide Impurity 33 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Ipratropium Bromide Impurity 33 (CAS 2784-21-6) is a certified pharmaceutical impurity reference standard with the molecular formula C20H30NO3Br and a molecular weight of 412.37 g/mol.
Based on its molecular formula C20H30NO3Br, Ipratropium Bromide Impurity 33 contains a steroid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 412.37 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C20H30NO3 Br |
| Molecular Weight | 412.37 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | >90% |
| Storage | Store at room temperature, 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 Ipratropium Standards
- Ipratropium Impurity 24 (Mixture of Isomers) (CAS 17812-46-3)
- Ipratropium Impurity 17 (CAS 17838-69-6)
- (S)-Ipratropium Bromide EP Impurity E Formate (CAS 183626-76-8)
- Ipratropium Bromide EP Impurity E (CAS 22235-81-0)
- Ipratropium Bromide (CAS 22254-24-6)
- Ipratropium Impurity 30 (CAS 259092-15-4)
- Ipratropium Impurity 31 (CAS 3423-25-4)
- Ipratropium Impurity 13 HCl (CAS 3423-28-7(Free Base))
Recommended Standards
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- Vortioxetine Impurity 8 (CAS 13616-83-6)
- 6-Imidazo[1,2-a]pyridinecarbaldehyde (CAS 116355-16-9)
- 4-Chloro-2-(difluoromethyl)-6-(hydroxymethyl)pyridin-3-ol (CAS 1806006-68-7)
- 4-(5-(Difluoromethyl)-1,3,4-oxadiazol-2-yl)benzoic acid (CAS 1282022-66-5)
- Ethyl 2-mercapto-1H-imidazole-4-carboxylate (CAS 64038-64-8)
- (R)-2-(4,4-Difluoropyrrolidin-2-yl)acetic acid hydrochloride (CAS 2567489-28-3)
- Peptide 74 (H-8545.0500) (CAS 132116-39-3)
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 18665070610 / Nicole.chen@cato-chem.com