2-Acetamidothiazole-4-sulfonyl chloride CAS 654072-71-6
| CAS No. | 654072-71-6 |
| Molecular Formula | C5H5ClN2O3S2 |
| Molecular Weight | 240.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 2-Acetamidothiazole-4-sulfonyl chloride (C5H5ClN2O3S2) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 4.0, corresponding to approximately 4 ring(s) or double-bond equivalent(s). With a molecular weight of 240.69 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies 2-Acetamidothiazole-4-sulfonyl chloride (CAS 654072-71-6), a certified reference material (molecular formula C5H5ClN2O3S2, MW 240.69 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 | C5H5ClN2O3S2 |
| Molecular Weight | 240.69 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1985 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 2 |
Related Acetamidothiazole Standards
- 2-Acetamidothiazole-5-sulfonyl chloride (CAS 69812-30-2)
- Ethyl 2-acetamidothiazole-5-carboxylate (CAS 106840-37-3)
- Ethyl 5-acetamidothiazole-2-carboxylate (CAS 106840-76-0)
- Methyl 5-acetamidothiazole-2-carboxylate (CAS 98276-95-0)
- 5-Acetamidothiazole-2-carboxylic acid (CAS 408535-86-4)
- 5-Acetamidothiazole-2-carboxamide (CAS 1378853-29-2)
- 2-Acetamidothiazole (CAS 2719-23-5)
Recommended Standards
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- CAS 558-23-6 (CAS 558-23-6)
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