4-Bromo-1,5-dimethyl-1h-pyrazole-3-sulfonyl chloride CAS 1538239-71-2
| CAS No. | 1538239-71-2 |
| Molecular Formula | C5H6BrClN2O2S |
| Molecular Weight | 273.54 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H6BrClN2O2S, 4-Bromo-1,5-dimethyl-1h-pyrazole-3-sulfonyl chloride contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine/bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 273.54 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
4-Bromo-1,5-dimethyl-1h-pyrazole-3-sulfonyl chloride (CAS 1538239-71-2) is a high-purity analytical reference standard with the molecular formula C5H6BrClN2O2S and a molecular weight of 273.54 g/mol.
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 4-Bromo-1,5-dimethyl-1h-pyrazole-3-sulfonyl chloride 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 | C5H6BrClN2O2S |
| Molecular Weight | 273.54 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Bromo Standards
- (4-Bromo-1-methyl-1H-pyrazol-5-yl)methanesulfonyl chloride (CAS 1708436-36-5)
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Recommended Standards
- 4-Hydroxy-2',4',6'-trichlorobiphenyl (CAS 14962-28-8)
- Dodecylmagnesium bromide solution (CAS 15890-72-9)
- 2',4,4'-Trichloro-[1,1'-biphenyl]-3-ol (CAS 1227375-87-2)
- Hexadecanoic-9,9,10,10,11,11,12,12,13,13,14,14,15,15,16,16,16-d17 Acid (CAS 81462-28-4)
- N-(4-(cyanomethyl)phenyl)-1-phenylcyclopentane-1-carboxamide (CAS 591241-84-8)
- N,N-Diethyl-3-nitro-benzeneethanamine (CAS 932405-32-8)
- 3-(4-Methoxyphenyl)imidazo[1,2-a]pyridine (CAS 1338248-76-2)
- 2,3-Difluoro-4-formyl-benzyloxybenzene (CAS 947279-29-0)
- tert-Butyl 2,7-diazaspiro[3.5]nonane-2-carboxylate hydrochloride (CAS 929302-18-1)
- 4,6-Dimethylbenzo[d]isothiazole (CAS 1246034-43-4)
- Methyl 3-chloro-6-fluoropyrazine-2-carboxylate (CAS 356783-54-5)
- Bosutinib Impurity 4 (CAS 492444-39-0)
- 2-Chloro-6-cyano-5-(difluoromethyl)pyridine-3-sulfonamide (CAS 1805258-31-4)
- Exenatide (CAS 141758-74-9)
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