1-Methyl-1H-pyrrole-3-sulfonyl chloride CAS 142112-64-9
| CAS No. | 142112-64-9 |
| Molecular Formula | C5H6ClNO2S |
| Molecular Weight | 179.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 1-Methyl-1H-pyrrole-3-sulfonyl chloride (CAS 142112-64-9), a certified reference material (molecular formula C5H6ClNO2S, MW 179.62 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H6ClNO2S, 1-Methyl-1H-pyrrole-3-sulfonyl 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 179.62 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.
As a certified reference material (CRM), 1-Methyl-1H-pyrrole-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 | C5H6ClNO2S |
| Molecular Weight | 179.62 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Recommended Standards
- 4-chloro-7-fluoro-1H-pyrazolo[4,3-c]pyridine (CAS 1374651-76-9)
- (1-Cyanocyclopropyl)methanesulfonyl chloride (CAS 1461707-09-4)
- 5-chloro-3-fluoro-pyrazolo[1,5-a]pyrimidine (CAS 1263062-21-0)
- 2-chloro-5-fluoro-7H-pyrrolo[2,3-d]pyrimidine (CAS 1638768-28-1)
- N,N-Dimethyl-4-piperidin-4-ylpyridin-2-amine dihydrochloride (CAS 2108138-79-8)
- 4-(4-Fluorophenyl)pyridin-2(1H)-one (CAS 1159817-47-6)
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