2-chloro-6-(ethanesulfinyl)benzoic acid CAS 1803604-34-3
| CAS No. | 1803604-34-3 |
| Molecular Formula | C9H9ClO3S |
| Molecular Weight | 232.68 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-chloro-6-(ethanesulfinyl)benzoic acid.
2-chloro-6-(ethanesulfinyl)benzoic acid (CAS 1803604-34-3) is a high-purity analytical reference standard with the molecular formula C9H9ClO3S and a molecular weight of 232.68 g/mol.
Owing to a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system, 2-chloro-6-(ethanesulfinyl)benzoic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 232.68 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C9H9ClO3S |
| Molecular Weight | 232.68 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 |
| 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related chloro Standards
- 2-Chloro-4-(cyclopropylsulfonyl)phenol (CAS 1147558-11-9)
- 3-chloro-2-(ethanesulfonyl)benzaldehyde (CAS 1379324-69-2)
- 5-Chloro-2-(ethanesulfonyl)benzaldehyde (CAS 1379327-84-0)
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Recommended Standards
- (2,2-difluorocyclohexyl)methanesulfonyl chloride (CAS 1784380-35-3)
- 2-Methyl-2,3-dihydro-1-benzofuran-7-sulfonyl chloride (CAS 1781955-21-2)
- 2-Butoxy-4-chloro-3-fluoro-1-methoxybenzene (CAS 1881322-05-9)
- [1-(difluoromethyl)cyclopentyl]methanesulfonyl chloride (CAS 1781693-40-0)
- (2-Butoxyphenyl)-N-(4-methoxybenzyl)methanamine (CAS 1040686-41-6)
- 1-Benzylpyrrolidine-3-carbohydrazide (CAS 474317-63-0)
- 898785-52-9 3-(1,3-Dioxan-2-yl)-1-(4-iodophenyl)propan-1-one DTXSID70645902 (CAS 898785-52-9)
- N-Nitroso Gentamicin impurity 29 (CAS CATO-C4X-148029)
- Nafamostat impurity 125 (CAS 1553717-68-2)
- 4-(4-(Pyridin-2-yl)pyrimidin-2-yl)phenyl 4-methylbenzoate (CAS 477857-37-7)
- 5-formylpyrazolo[1,5-a]pyridine-3-carboxylic acid (CAS 1368168-29-9)
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- 4-[2-(2-Isopropyl-5-methylphenoxy)ethyl]-piperidine hydrochloride (CAS 1219981-02-8)
- Calcium-Like Peptide 3 (CAS 261969-05-5)
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