(1,3-Dimethyl-1h-pyrazol-5-yl)methanesulfonyl chloride CAS 1486329-09-2
| CAS No. | 1486329-09-2 |
| Molecular Formula | C6H9ClN2O2S |
| Molecular Weight | 208.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(1,3-Dimethyl-1h-pyrazol-5-yl)methanesulfonyl chloride (C6H9ClN2O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
(1,3-Dimethyl-1h-pyrazol-5-yl)methanesulfonyl chloride (CAS 1486329-09-2), molecular formula C6H9ClN2O2S and molecular weight 208.67 g/mol, is a CATO reference standard with documented purity and traceability.
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.
As a certified reference material (CRM), (1,3-Dimethyl-1h-pyrazol-5-yl)methanesulfonyl 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 | C6H9ClN2O2S |
| Molecular Weight | 208.67 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-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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Recommended Standards
- (1-Ethyl-1H-imidazol-2-yl)methanesulfonyl chloride (CAS 1420855-43-1)
- (1-Ethyl-1h-imidazol-5-yl)methanesulfonyl chloride (CAS 1497189-46-4)
- 4-Cyanopiperidine-1-sulfonyl chloride (CAS 1392803-35-8)
- 1-Propyl-1H-imidazole-4-sulfonyl chloride (CAS 137049-03-7)
- 3-((3-Fluorobenzyl)thio)-6-methylpyridazine (CAS 5376-26-1)
- Pentamidine Impurity 2 (CAS 1252-44-4)
- 4-Hydroxyhexanoic acid (CAS 13532-38-2)
- 2-Ethyltetradecanoic acid (CAS 25354-93-2)
- Dimethyl 3-bromopyridine-2,4-dicarboxylate (CAS 1222185-12-7)
- S-Phenyl diphenylphosphinothioate (CAS 5510-78-1)
- 2,3-Dihydro-6-iodoquinolin-4(1h)-one (CAS 38470-27-8)
- N-(2-Fluoro-5-methylphenyl)-1-phenylcyclopentane-1-carboxamide (CAS 1023526-17-1)
- 4,5-Dimethoxy-2-(methoxymethyl)pyridine (CAS 62885-50-1)
- Semaglutide impurity 59 (CAS CATO-C4X-222659)
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