4-Bromo-1-methyl-5-((naphthalen-2-yloxy)methyl)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one CAS 1022545-28-3
| CAS No. | 1022545-28-3 |
| Molecular Formula | C21H17BrN2O2 |
| Molecular Weight | 409.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO supplies 4-Bromo-1-methyl-5-((naphthalen-2-yloxy)methyl)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 1022545-28-3), a certified reference material (molecular formula C21H17BrN2O2, MW 409.28 g/mol) for analytical method development and quality control.
Based on its molecular formula C21H17BrN2O2, 4-Bromo-1-methyl-5-((naphthalen-2-yloxy)methyl)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one 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 409.28 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C21H17BrN2O2 |
| Molecular Weight | 409.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Bromo Standards
- 1022739-72-5 4-bromo-1-methyl-5-[(naphthalen-1-yloxy)methyl]-2-phenyl-2,3-dihydro-1H-pyrazol-3-one MS-8870 (CAS 1022739-72-5)
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Recommended Standards
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- n-(2,3-Dichlorophenyl)-2-(4-(4-nitrophenyl)piperazin-1-yl)acetamide (CAS 851720-29-1)
- 2-(3-Chloro-2-fluoro-4-(trifluoromethyl)phenyl)acetonitrile (CAS 1431329-60-0)
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- Methyl 5-cyclopropyl-4-iodoisoxazole-3-carboxylate (CAS 2924155-86-0)
- Isavuconazole Impurity 196 (CAS CATO-C4X-1236196)
- Desulfo Aztreonam Trifluoroacetic Acid Salt (CAS 102579-59-9(Free Base))
- 2-Cyclobutyl-1H-benzo[d]imidazole-6-carboxylic acid (CAS 1097805-47-4)
- 2,3,4,6,7,8,9,10-Octahydro-1H-cyclohepta[4,5]pyrrolo[1,2-a]pyrazin-1-one (CAS 2180068-05-5)
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- Methyl 1H-benzimidazole-6-carboxylate hydrochloride (CAS 222987-26-0)
- Semaglutide Impurity 183 (CAS 159541-28-3)
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