5-Bromo-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-2-methoxybenzenesulfonamide CAS 905786-14-3
| CAS No. | 905786-14-3 |
| Molecular Formula | C18H18BrN3O4S |
| Molecular Weight | 452.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5-Bromo-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-2-methoxybenzenesulfonamide.
5-Bromo-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-2-methoxybenzenesulfonamide (CAS 905786-14-3), molecular formula C18H18BrN3O4S and molecular weight 452.32 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 5-Bromo-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-2-methoxybenzenesulfonamide (C18H18BrN3O4S) is characterized by a flavonoid core, 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5-Bromo-N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazol-4-yl)-2-methoxybenzenesulfonamide 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.
Physical & Chemical Properties
| Molecular Formula | C18H18BrN3O4S |
| Molecular Weight | 452.32 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
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Recommended Standards
- 3-[(3R,4R)-6-Bromo-3-(hydroxymethyl)-3,4-dihydro-2H-1-benzopyran-4-yl]-3-methyl-1-(4-nitrophenyl)thiourea (CAS 321521-55-5)
- 2-Chloro-3-{4-[5-(4-chlorophenyl)-1H-pyrazol-3-yl]piperidin-1-yl}-1,4-dihydronaphthalene-1,4-dione (CAS 1030937-43-9)
- N-(3-(2-Ethoxyethyl)benzo[d]thiazol-2(3H)-ylidene)-2-iodobenzamide (CAS 865162-48-7)
- 1-((2,2-Difluorobenzo[d][1,3]dioxol-5-yl)methyl)-2-oxo-N-(2-(trifluoromethyl)phenyl)-1,2-dihydropyridine-3-carboxamide (CAS 400082-68-0)
- (2S,4S)-2-Amino-4-(pyridin-4-ylmethyl)pentanedioic acid (CAS 1217694-65-9)
- methyl 5-iodothiophene-2-carboxylate (CAS 88105-22-0)
- 3-Fluoro-n-methyl-5-nitrobenzamide (CAS 1239596-39-4)
- Methyl 4,6-Dimethylpyridine-2-carboxylate (CAS 69971-38-6)
- Copper germanium selenide, 99.99% (metals basis) (CAS 54723-90-9)
- 4-Chlorothiazole (CAS 4175-72-8)
- 4-(5-Chloro-1H-benzo[d]imidazol-2-yl)morpholine (CAS 333771-44-1)
- 1-(2,6-Dichlorobenzyl)-4-(2,6-difluorobenzoyl)-3-methyl-3,4-dihydroquinoxalin-2(1H)-one (CAS 317833-50-4)
- Ethyl 2-(4-(2-(1H-indol-2-yl)-1,3-dioxolan-2-yl)piperidin-1-yl)acetate (CAS 33037-89-7)
- Semaglutide Impurity 11 (CAS CATO-C4X-222611)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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