2-Chloro-5-(1-pyrrolidinylcarbonyl)benzenesulfonyl chloride CAS 91193-66-7
| CAS No. | 91193-66-7 |
| Molecular Formula | C11H11Cl2NO3S |
| Molecular Weight | 308.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 2-Chloro-5-(1-pyrrolidinylcarbonyl)benzenesulfonyl 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.
2-Chloro-5-(1-pyrrolidinylcarbonyl)benzenesulfonyl chloride (CAS 91193-66-7), molecular formula C11H11Cl2NO3S and molecular weight 308.18 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution, 2-Chloro-5-(1-pyrrolidinylcarbonyl)benzenesulfonyl chloride is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 308.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H11Cl2NO3S |
| Molecular Weight | 308.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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.) | 1983 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Chloro Standards
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- 2-Chloro-3-(2-oxopiperidin-1-yl)benzene-1-sulfonyl chloride (CAS 1509935-78-7)
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Recommended Standards
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- 3-(2-(Benzyloxy)-5-bromophenyl)-N,N-diisopropyl-3-phenylpropan-1-amine (CAS 156755-27-0)
- 2-(Chloromethyl)-5-(4-methylphenyl)-3h,4h-thieno[2,3-d]pyrimidin-4-one (CAS 571155-99-2)
- 1-[2-(pyrrolidin-1-yl)ethyl]-1H-pyrazole-4-carboxylic acid (CAS 1155065-00-1)
- 1-(2,6-Difluorophenyl)cyclopentanecarbonitrile (CAS 1260877-15-3)
- 2-(3-Isopropylphenoxy)-5-(trifluoromethyl)aniline (CAS 946728-08-1)
- Cinacalcet Impurity 41 (CAS CATO-C4X-105941)
- 3-(4-Cyanophenyl)-2-methylpropanoic acid (CAS 60423-91-8)
- (S)-2-(5-fluoro-2-(trifluoromethyl)phenyl)pyrrolidine (CAS 1213381-50-0)
- 2-Phenylthiazole-4-carboxylic acid (CAS 7113-10-2)
- 3X Flag Peptide trifluoroacetate salt (CAS 402750-12-3)
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