5-(tert-Butyl)-2-ethoxybenzene-1-sulfonyl chloride CAS 252898-57-0
| CAS No. | 252898-57-0 |
| Molecular Formula | C12H17ClO3S |
| Molecular Weight | 276.78 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 276.78 g/mol gives 5-(tert-Butyl)-2-ethoxybenzene-1-sulfonyl chloride distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-(tert-Butyl)-2-ethoxybenzene-1-sulfonyl chloride (CAS 252898-57-0), molecular formula C12H17ClO3S and molecular weight 276.78 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C12H17ClO3S, 5-(tert-Butyl)-2-ethoxybenzene-1-sulfonyl chloride contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 276.78 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), 5-(tert-Butyl)-2-ethoxybenzene-1-sulfonyl 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 | C12H17ClO3S |
| Molecular Weight | 276.78 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Recommended Standards
- 5-(Sec-butyl)-2-ethoxybenzene-1-sulfonyl chloride (CAS 2767645-38-3)
- 6-Chloro-n,n-bis(propan-2-yl)pyridine-3-sulfonamide (CAS 568566-62-1)
- 4-Chloro-4-(ethylthio)benzophenone (CAS 844885-04-7)
- Bis(cyclohexylmethyl)phosphinic chloride (CAS 34682-47-8)
- 3-Fluoro-4-(hydroxymethyl)benzoic acid (CAS 214554-16-2)
- 3-Chloro-2-fluoro-4-iodoaniline (CAS 874840-61-6)
- 2,7-Dimethylpyrazolo[1,5-a]pyrimidine-6-carboxylic acid (CAS 175201-51-1)
- 8-Ethyl-4-(3-methylbenzoyl)-1-oxa-4,8-diazaspiro[4.5]decane-3-carboxylic acid (CAS 1326814-35-0)
- 2-(4-methylthiazol-2-yl)propan-2-ol (CAS 124341-73-7)
- Cyclopropanecarbohydrazide (CAS 6952-93-8)
- N-(4-Bromo-2-fluorobenzyl)propan-1-amine (CAS 1094257-47-2)
- 1-(4-Bromophenyl)-3-hydroxy-2-methylpropan-1-one (CAS 92207-34-6)
- 1-[3-(Methylsulfonyl)phenyl]cyclopentanecarbonitrile (CAS 2120495-01-2)
- C-Peptide (human) (CAS 33017-11-7)
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