(1-(Sec-butyl)-1h-pyrazol-3-yl)methanesulfonyl chloride CAS 1342862-77-4
| CAS No. | 1342862-77-4 |
| Molecular Formula | C8H13ClN2O2S |
| Molecular Weight | 236.72 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of (1-(Sec-butyl)-1h-pyrazol-3-yl)methanesulfonyl chloride is closely related to an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
(1-(Sec-butyl)-1h-pyrazol-3-yl)methanesulfonyl chloride (CAS 1342862-77-4), molecular formula C8H13ClN2O2S and molecular weight 236.72 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H13ClN2O2S, (1-(Sec-butyl)-1h-pyrazol-3-yl)methanesulfonyl chloride contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 236.72 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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-(Sec-butyl)-1h-pyrazol-3-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 | C8H13ClN2O2S |
| Molecular Weight | 236.72 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.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
- 2-Chloro-6-(m-tolylthio)pyrazine (CAS 1250989-41-3)
- 4-Chloro-2-((pyridin-2-ylmethyl)thio)pyridine (CAS 1346707-82-1)
- (1-tert-Butyl-1h-pyrazol-4-yl)methanesulfonyl chloride (CAS 1250222-25-3)
- 4-Chloro-2-((pyridin-3-ylmethyl)thio)pyridine (CAS 1346707-83-2)
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- 1-(3,6-Dimethylpyrazin-2-yl)propan-1-one (CAS 115609-79-5)
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- 4-Chloro-N-(2-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)amino)ethyl)benzamide (CAS 338409-32-8)
- Ceftibuten Impurity 6 (CAS CATO-C4X-18906)
- Allo-D-Ile17-Tirzepatide (CAS CATO-CPTD788962)
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