2-(Methylsulfonyl)acetyl chloride CAS 56841-99-7
| CAS No. | 56841-99-7 |
| Molecular Formula | C3H5ClO3S |
| Molecular Weight | 156.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 156.59 g/mol gives 2-(Methylsulfonyl)acetyl chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
2-(Methylsulfonyl)acetyl chloride (CAS 56841-99-7), molecular formula C3H5ClO3S and molecular weight 156.59 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C3H5ClO3S, 2-(Methylsulfonyl)acetyl chloride contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 156.59 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 2-(Methylsulfonyl)acetyl 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 | C3H5ClO3S |
| Molecular Weight | 156.59 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.) | 1973 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Methylsulfonyl Standards
- 1-(Methylsulfonyl)benzene-4-D (CAS 2122800-11-5)
- (Methylsulfonyl)benzene- (CAS 125562-53-0)
- 2-(Methylsulfonyl)pyridine (CAS 17075-14-8)
- 4-(Methylsulfonyl)pyridine (CAS 17075-15-9)
- 5-(Methylsulfonyl)pyrimidine (CAS 14080-16-1)
- 4-(Methylsulfonyl)pyrimidine (CAS 14161-10-5)
- 3-(Methylsulfonyl)-1,2,4-triazine (CAS 105783-77-5)
- 2-Methyl-3-(methylsulfonyl)-1H-pyrrole (CAS 1707571-37-6)
Recommended Standards
- Oxetane-3-sulfonyl chloride (CAS 1393585-06-2)
- 2-Oxopropane-1-sulfonyl chloride (CAS 637031-08-4)
- 4-Chloro-2-fluorostyrene (CAS 711017-44-6)
- 2-Chloro-2-phenylethanol (CAS 1004-99-5)
- Ethyl 3-phenyl-1H-pyrazole-5-carboxylate (CAS 5932-30-9)
- N-(4-(Allyloxy)benzyl)-1-(pyridin-3-yl)methanamine (CAS 774190-49-7)
- 2-((3-Cyano-6-phenyl-4-(p-tolyl)pyridin-2-yl)thio)-N-(4-ethoxyphenyl)acetamide (CAS 332127-54-5)
- 2-(2-Acetyl-1,2-dihydroisoquinolin-1-yl)-1-(5-methyl-2,3,4,5-tetrahydro-1H-[1,4]diazepino[2,3-b]quinoxalin-1-yl)ethanone (CAS 1014756-97-8)
- 2,6-Dichloro-N-phenylisonicotinamide (CAS 287174-84-9)
- N-(5-Chloro-2-methylphenyl)-2-((3-ethyl-5,6-dimethyl-4-oxo-3,4-dihydrothieno[2,3-d]pyrimidin-2-yl)thio)acetamide (CAS 585552-97-2)
- 1-(4-Bromophenyl)pentan-2-one (CAS 200064-99-9)
- 2-(ethylamino)propanenitrile hydrochloride (CAS 1989659-41-7)
- 6-Chloro-N-(3-chloro-4-fluorophenyl)pyrido[3,2-d][1,2,3]triazin-4-amine (CAS 1048699-24-6)
- [y-Glu15]-Semaglutide Impurity 134 (CAS CATO-C4X-2226134)
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