Ethyl 3-(Chlorosulfonyl)propionate CAS 103472-25-9
| CAS No. | 103472-25-9 |
| Molecular Formula | C5H9ClO4S |
| Molecular Weight | 200.64 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 200.64 g/mol gives Ethyl 3-(Chlorosulfonyl)propionate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Ethyl 3-(Chlorosulfonyl)propionate (CAS 103472-25-9), molecular formula C5H9ClO4S and molecular weight 200.64 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H9ClO4S, Ethyl 3-(Chlorosulfonyl)propionate 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.
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.) | 1986 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Ethyl Standards
- 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)
- Ethyl 2-(chlorosulfonyl)propanoate (CAS 20449-09-6)
- 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
- 5-Chloro-3-fluoro-2-(pyrrolidin-1-yl)pyridine (CAS 1020253-18-2)
- 5-Chloro-2-thiobenzenesulfonyl fluoride (CAS 108158-05-0)
- 4-(2-Chloro-6-fluorophenyl)butan-2-one (CAS 1019769-64-2)
- 4-(2-Chloro-4-fluorophenyl)butan-2-one (CAS 1099621-26-7)
- 6-bromo-2,2′-bipyridine (CAS 10495-73-5)
- 2-Fluoro-4-iodonicotinonitrile (CAS 898854-59-6)
- (1-(Cyclopropylmethyl)-1H-pyrazol-4-yl)methanol (CAS 1342433-03-7)
- 7-(Aminomethyl)benzo[c][1,2]oxaborol-1(3H)-ol (CAS 1268335-91-6)
- 2-{2-[(5-bromopyridin-2-yl)amino]ethoxy}ethan-1-ol (CAS 1249978-84-4)
- (11bR)-2,6-Bis[4-(tert-butyl)phenyl]-8,9,10,11,12,13,14,15-octahydro-4-hydroxy-4-oxide-dinaphtho[2,1-d:1',2'-f][1,3,2]dioxaphosphepin (CAS 1569807-27-7)
- 5-Fluoro-4-(2-methyl-1-(tetrahydro-2H-pyran-4-yl)-1H-imidazol-5-yl)pyrimidin-2-amine (CAS 933784-97-5)
- Ethyl (4R,4aR,8aS)-decahydroisoquinoline-4-carboxylate acetate (CAS 646518-35-6)
- Sodium 2-methylphenolate (CAS 4549-72-8)
- Des-Ala21-Tirzepatide (CAS CATO-CPTD788952)
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