7-Bromo-2-methyl-2H-indazole-3-sulfonyl chloride CAS 845751-92-0
| CAS No. | 845751-92-0 |
| Molecular Formula | C8H6BrClN2O2S |
| Molecular Weight | 309.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
7-Bromo-2-methyl-2H-indazole-3-sulfonyl chloride (CAS 845751-92-0), molecular formula C8H6BrClN2O2S and molecular weight 309.57 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 7-Bromo-2-methyl-2H-indazole-3-sulfonyl chloride (C8H6BrClN2O2S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine/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. 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).
As a certified reference material (CRM), 7-Bromo-2-methyl-2H-indazole-3-sulfonyl chloride meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C8H6BrClN2O2S |
| Molecular Weight | 309.57 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl/Br-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 6-Bromo-2-methyl-2H-indazole-3-sulfonyl chloride (CAS 1363380-61-3)
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- 2-Amino-1-(1-ethyl-1h-imidazol-2-yl)ethan-1-ol (CAS 1517829-61-6)
- methyl (3R,5S)-5-methylpiperidine-3-carboxylate (CAS 405513-11-3)
- Ethyl 7-Bromo-2,4-diethoxy-5H-pyrrolo[3,2-d]pyrimidine-6-carboxylate (CAS 20419-71-0)
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- 8-Oxa-3-azabicyclo[4.2.0]Octane (CAS 1509857-38-8)
- 4-(Methylsulfanyl)-6-oxo-1,6-dihydropyrimidine-5-carbonitrile (CAS 16071-28-6)
- Semaglutide Impurity 124 (CAS CATO-C4X-2226124)
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