4-Bromo-1-methyl-2-phenyl-5-(tosylmethyl)-1,2-dihydro-3H-pyrazol-3-one CAS 1023502-23-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 1023502-23-9 |
| Molecular Formula | C18H17BrN2O3S |
| Molecular Weight | 421.31 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Bromo-1-methyl-2-phenyl-5-(tosylmethyl)-1,2-dihydro-3H-pyrazol-3-one (CAS 1023502-23-9) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C18H17BrN2O3S. Molecular weight: 421.31 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C18H17BrN2O3S |
| Molecular Weight | 421.31 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.) | 1988 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- Sitagliptin Impurity 88 (CAS CATO-C4X-114488)
- tert-Butyl 4-((4-amino-5-bromopyridin-3-yl)sulfonyl)piperazine-1-carboxylate (CAS 1352498-10-2)
- Sitagliptin Tablets EP Impurity FP-B (CAS 2805078-75-3)
- Ethyl 2-amino-3,5-dibromobenzoate (CAS 353754-49-1)
- 4-Bromo-5-(difluoromethyl)-3-methoxypyridine-2-sulfonamide (CAS 1806908-55-3)
- 1-Trifluoroacetyl-3,5-bis(trifluoromethyl)pyrazole (CAS 261761-10-8)
- Tert-butyl (2-((4-bromobenzyl)amino)ethyl)carbamate (CAS 1171245-32-1)
- N-(1-(4-(1H-Pyrazol-4-yl)phenyl)-2-(methylamino)ethyl)benzamide (CAS 917924-55-1)
- 3-(4-(4-Ethoxyphenyl)-5-((2-methylbenzyl)thio)-4H-1,2,4-triazol-3-yl)pyridine (CAS 477330-16-8)
- Semaglutide impurity 81 (CAS CATO-C4X-222681)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com