Aclidinium bromide Impurity 7 CAS CATO-C4X-13257
| CAS No. | CATO-C4X-13257 |
| Molecular Formula | C37H44N2O6S4 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Aclidinium bromide Impurity 7 (CAS CATO-C4X-13257) is a certified pharmaceutical impurity reference standard with the molecular formula C37H44N2O6S4Br and a molecular weight of 820.91 g/mol.
The molecular framework of Aclidinium bromide Impurity 7 (C37H44N2O6S4Br) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, bromine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), Aclidinium bromide Impurity 7 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C37H44N2O6S4 Br |
| Molecular Weight | 820.91 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 16.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 4 |
Related Aclidinium Standards
- Aclidinium bromide Impurity 10 (CAS 1708930-15-7)
- Aclidinium bromide Impurity 1 (CAS 26878-13-7)
- Aclidinium bromide Impurity 4 (CAS 28569-88-2)
- Aclidinium Bromide (CAS 320345-99-1)
- (S)-Aclidinium Bromide (CAS 320346-78-9)
- Aclidinium bromide Impurity 12 (CAS 320347-97-5)
- Aclidinium bromide Impurity 8 (CAS 4075-58-5)
- Aclidinium bromide Impurity 2 (CAS 7333-07-5)
Recommended Standards
- Valsartan Impurity 49 (CAS CATO-C4X-105749)
- Carfilzomib Impurity 16 (CAS CATO-C4X-102216)
- Latamoxef Impurity 6 (CAS 78641-40-4)
- 7-Fluoro-3-methoxy-1H-indazole (CAS 1415741-96-6)
- (3-Fluorophenyl)(2-(pyrrolidin-1-ylmethyl)phenyl)methanone (CAS 898774-53-3)
- 1-Chloro-3-(propan-2-yloxy)propane (CAS 72468-94-1)
- 2,2-difluoro-2-(oxetan-3-yl)ethan-1-amine (CAS 1783697-93-7)
- 1,1-Diethyl-3-(2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)urea (CAS 2246673-66-3)
- 1,1-Bis-(2,2,2-trifluoro-ethyl)-cyclohexane (CAS 1349718-21-3)
- Glu17-Semaglutide (CAS CATO-C4X-2226209)
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