2-((2,4-Dichlorophenyl)thio)acetic acid CAS 7720-41-4
| CAS No. | 7720-41-4 |
| Molecular Formula | C8H6Cl2O2S |
| Molecular Weight | 237.10 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.
2-((2,4-Dichlorophenyl)thio)acetic acid (CAS 7720-41-4) is a high-purity analytical reference standard with the molecular formula C8H6Cl2O2S and a molecular weight of 237.10 g/mol.
Based on its molecular formula C8H6Cl2O2S, 2-((2,4-Dichlorophenyl)thio)acetic acid 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 237.10 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C8H6Cl2O2S |
| Molecular Weight | 237.10 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; 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.) | 1959 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Dichlorophenyl Standards
- 2-[(3,5-dichlorophenyl)sulfanyl]acetic acid (CAS 17231-93-5)
- [(2,6-dichlorophenyl)thio]acetic acid (CAS 21248-45-3)
- 2-((2,3-Dichlorophenyl)thio)acetic acid (CAS 6390-19-8)
- 2-((3,4-Dichlorophenyl)thio)acetic acid (CAS 21248-51-1)
- 2-(2,5-Dichlorophenyl)-2-mercaptoacetic acid (CAS 2169410-39-1)
- 2-[(2,5-dichlorophenyl)sulfanyl]acetic acid (CAS 6274-27-7)
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- 3-(3,4-Dichlorophenyl)propanoyl chloride (CAS 90273-67-9)
Recommended Standards
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- 2-{N-[2,4-dichloro-5-(propan-2-yloxy)phenyl]4-chlorobenzenesulfonamido}acetic acid (CAS 338967-38-7)
- n-(4-Bromo-2-chlorobenzyl)-2-methylpropan-1-amine (CAS 1178687-51-8)
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