Procaterol Impurity 33 CAS CATO-C4X-181033
| CAS No. | CATO-C4X-181033 |
| Molecular Formula | C17H19Br2NO4 |
| Molecular Weight | 461.15 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a process- or degradation-related impurity, Procaterol Impurity 33 (CAS CATO-C4X-181033, C17H19Br2NO4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Structurally, Procaterol Impurity 33 (C17H19Br2NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 461.15 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C17H19Br2NO4 |
| Molecular Weight | 461.15 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | >95% |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Procaterol Standards
- Procaterol Impurity 46 (CAS CATO-C4X-181046)
- Procaterol Impurity 5 (CAS CATO-C4X-18105)
- Procaterol Impurity 13 (CAS CATO-C4X-181013)
- Procaterol Impurity 3 (CAS CATO-C4X-18103)
- Procaterol Impurity 38 (CAS CATO-C4X-181038)
- Procaterol Impurity 49 (CAS CATO-C4X-181049)
- Procaterol Impurity 34 (CAS CATO-C4X-181034)
- Procaterol Impurity 1 (CAS 59827-93-9)
Recommended Standards
- 1,1-Bis(2-bromo-4,5-dimethoxyphenyl)methanamine (CAS 887405-36-9)
- (2Z)-N-(3,4-Dichlorophenyl)-2-[(1E)-{[(2,6-dichlorophenyl)methoxy]imino}methyl]-3-(dimethylamino)prop-2-enamide (CAS 320417-82-1)
- Hexaflumuron (CAS 86479-06-3)
- 2-(Methyl(4-methylbenzyl)amino)-2-oxoethyl 4,5-dibromothiophene-2-carboxylate (CAS 852934-82-8)
- Salbutamol Impurity 57 (CAS CATO-C4X-1176157)
- Cinacalcet Impurity 42 (CAS CATO-C4X-105942)
- Methoxyphenamine Impurity 4 (CAS CATO-C4X-23974)
- 1-(4-Chlorobenzyl)-1H-pyrazole-4-sulfonamide (CAS 1341915-89-6)
- 1-propyl-1,2,3,4-tetrahydropyrimidine-2,4-dione (CAS 24466-52-2)
- N-Pyridin-4-yl-guanidine dihydrochloride (CAS 1286277-20-0)
- Apomorphine Hydrochloride (CAS 314-19-2)
- Methyl 5-bromo-3-hydroxythiophene-2-carboxylate (CAS 130228-59-0)
- 3-(Piperidin-4-yloxy)benzamide hydrochloride (CAS 906744-11-4)
- Tirzepatide Impurity 34 (CAS CATO-C4X-324034)
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