3-(Chlorosulfonyl)propanoyl chloride CAS 3944-67-0
| CAS No. | 3944-67-0 |
| Molecular Formula | C3H4Cl2O3S |
| Molecular Weight | 191.03 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.
3-(Chlorosulfonyl)propanoyl chloride (CAS 3944-67-0), molecular formula C3H4Cl2O3S and molecular weight 191.03 g/mol, is a CATO reference standard with documented purity and traceability.
3-(Chlorosulfonyl)propanoyl chloride (C3H4Cl2O3S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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), 3-(Chlorosulfonyl)propanoyl 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 | C3H4Cl2O3S |
| Molecular Weight | 191.03 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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.) | 1958 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorosulfonyl Standards
- 2-(Chlorosulfonyl)butanoic acid (CAS 1314977-78-0)
- Methyl 3-(Chlorosulfonyl)propanoate (CAS 15441-07-3)
- 2-(Chlorosulfonyl)ethyl acetate (CAS 78303-71-6)
- methyl 2-(chlorosulfonyl)propanoate (CAS 20449-10-9)
- 3-[(chlorosulfonyl)(ethyl)amino]propanenitrile (CAS 1064037-92-8)
- 3-[(chlorosulfonyl)(methyl)amino]-2-methylpropanenitrile (CAS 1250149-70-2)
- 3-[(chlorosulfonyl)(methyl)amino]butanenitrile (CAS 1343825-88-6)
- 3-[(chlorosulfonyl)(methyl)amino]propanenitrile (CAS 209971-18-6)
Recommended Standards
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- 2-(4-Bromo-1H-pyrazol-1-yl)ethanol (CAS 214614-81-0)
- 4-[(1-Azetidinyl)methyl]phenylboronic acid (CAS 2246662-21-3)
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- (1-Methyl-5-phenyl-1H-pyrazol-4-yl)methanol (CAS 499785-47-6)
- 51093-34-6 4(1H)-Pyrimidinone, 2,6-diamino-1-methyl- DTXSID90326842 (CAS 51093-34-6)
- 4-ethyl-2-hydroxybenzoic acid (CAS 22890-53-5)
- 3-[trans-3-aminocyclobutyl]benzonitrile hydrochloride (CAS 1807940-86-8)
- 1-(2-Fluorophenyl)-2-methylpropan-2-amine (CAS 1840-77-3)
- Methyl 7-chloro-5-methoxyimidazo[1,5-a]pyridine-1-carboxylate (CAS 1427426-19-4)
- N-(thiophen-2-ylmethyl)-1-((thiophen-2-ylmethyl)imino)-1H-inden-3-amine hydrochloride (CAS 1274948-07-0)
- Endo-38a-Pro-Exenatide trifluoroacetate salt (CAS 1678416-95-9)
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