Ethyl 2-(chlorosulfonyl)propanoate CAS 20449-09-6
| CAS No. | 20449-09-6 |
| Molecular Formula | C5H9ClO4S |
| Molecular Weight | 200.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C5H9ClO4S, Ethyl 2-(chlorosulfonyl)propanoate contains a carbohydrate-derived structure, a sulfone group, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 200.64 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.
CATO supplies Ethyl 2-(chlorosulfonyl)propanoate (CAS 20449-09-6), a certified reference material (molecular formula C5H9ClO4S, MW 200.64 g/mol) for analytical method development and quality control.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C5H9ClO4S |
| Molecular Weight | 200.64 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- Ethyl 3-(Chlorosulfonyl)propionate (CAS 103472-25-9)
- 3-Chlorosulfonyl-butyric acid methyl ester (CAS 1154388-34-7)
- 3-(Chlorosulfonyl)-2,2-dimethylpropanoic acid (CAS 1506695-03-9)
- 3-(Chlorosulfonyl)propyl acetate (CAS 81692-70-8)
- Methyl 2-(chlorosulfonyl)-2-methylpropanoate (CAS 55896-98-5)
- Methyl 3-(chlorosulfonyl)-2-methylpropanoate (CAS 927966-06-1)
- Methyl 4-chlorosulfonyl-butanoate (CAS 81926-28-5)
- 2-(chlorosulfonyl)-1,3-dimethoxypropane (CAS 1871639-57-4)
Recommended Standards
- 4-Chloro-1-(4-fluorophenyl)butan-1-one (CAS 41167-07-1)
- 4-(2-Chloroallyl)-2-fluoro-1-methoxybenzene (CAS 951888-08-7)
- 3-chloro-1-(4-fluorophenyl)butan-1-one (CAS 70336-24-2)
- propan-2-yl 2-(chlorosulfonyl)acetate (CAS 303153-12-0)
- 4-Bromo-2-(3,3-difluoroazetidin-1-yl)benzonitrile (CAS 1707374-03-5)
- methyl 1-ethyl-5-fluoro-1H-indole-2-carboxylate (CAS 1172385-39-5)
- N-(2-Fluorobenzyl)-1-(4-methoxyphenyl)methanamine hydrobromide (CAS 1609409-01-9)
- DOTA-tris(tBu)ester NHS ester (CAS 819869-77-7)
- 2-Amino-4-(trifluoromethyl)benzohydrazide (CAS 1228794-36-2)
- 3-Cyclopentyl-2-sulfanyl-3,4-dihydroquinazolin-4-one (CAS 331971-79-0)
- Methyl 4-(2-(6-methylpyridin-2-yl)-5,6-dihydro-4H-pyrrolo[1,2-b]pyrazol-3-yl)quinoline-7-carboxylate (CAS 476475-45-3)
- Jatrorrhizine Iodide (CAS 1168-00-9)
- Ethyl 5-((2-chloro-6-fluorobenzyl)oxy)-2-phenylbenzofuran-3-carboxylate (CAS 307552-05-2)
- Peptide Impurity 24 (CAS CATO-CPTD788824)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com