Methylnaltrexone Bromide Impurity 3 CAS CATO-C4X-15213
| CAS No. | CATO-C4X-15213 |
| Molecular Formula | C21H26NO5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Methylnaltrexone Bromide Impurity 3 (CAS CATO-C4X-15213) is a certified pharmaceutical impurity reference standard with the molecular formula C21H26NO5Br and a molecular weight of 452.34 g/mol.
Based on its molecular formula C21H26NO5Br, Methylnaltrexone Bromide Impurity 3 contains a flavonoid 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 452.34 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 | C21H26NO5 Br |
| Molecular Weight | 452.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Methylnaltrexone Standards
- Methylnaltrexone Bromide Impurity 4 (CAS 1005410-32-1)
- Methylnaltrexone Bromide Impurity 1 (CAS 1027638-96-5)
- Methylnaltrexone Bromide - API Standards (CAS 916055-92-0)
- Methylnaltrexone (CAS 916055-93-1)
- Methylnaltrexone Bromide Impurity 25 (CAS CATO-C4X-147525)
- Methylnaltrexone Bromide Impurity 10 (CAS CATO-C4X-152110)
- Methylnaltrexone Bromide Impurity 11 (CAS CATO-C4X-152111)
- Methylnaltrexone Bromide Impurity 12 (CAS CATO-C4X-152112)
Recommended Standards
- Cefazolin EP Impurity D Sodium Salt (CAS 27164-45-0)
- Dapagliflozin Impurity 86 (CAS 1528636-07-8)
- HISTIDINE Impurity 13 (CAS CATO-C4X-323913)
- 6-methoxy-2,3,4,9-tetrahydro-1H-carbazol-4-one (CAS 35556-81-1)
- 3-{[(4,6-dimethylpyrimidin-2-yl)amino]methyl}benzoic acid (CAS 1184598-04-6)
- 2-Bromo-1-(2,5-dimethylphenyl)propan-1-one (CAS 1152568-65-4)
- 6-(Bromomethyl)-2-methylbenzo[d]oxazole (CAS 136663-55-3)
- 4-(4-(4-Ethylphenyl)-5-mercapto-4H-1,2,4-triazol-3-yl)phenol (CAS 917747-23-0)
- (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(2,3,4-trimethoxyphenyl)propanoic acid (CAS 381222-52-2)
- Tirzepatide Impurity 50 (CAS CATO-C4X-324050)
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