5-Chloro-2-ethoxybenzenethiol CAS 23385-49-1
| CAS No. | 23385-49-1 |
| Molecular Formula | C8H9ClOS |
| Molecular Weight | 188.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
5-Chloro-2-ethoxybenzenethiol (CAS 23385-49-1) is a high-purity analytical reference standard with the molecular formula C8H9ClOS and a molecular weight of 188.67 g/mol.
The molecular framework of 5-Chloro-2-ethoxybenzenethiol (C8H9ClOS) is characterized by sulfur-containing functionality, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 5-Chloro-2-ethoxybenzenethiol 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 | C8H9ClOS |
| Molecular Weight | 188.67 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- (5-Chloro-2-methoxy-phenyl)-methanethiol (CAS 1155100-13-2)
- 5-Chloro-2-(methylthio)benzyl alcohol (CAS 120121-38-2)
- 2-Chloro-6-(methylthio)benzenemethanol (CAS 1340127-12-9)
- 3-Chloro-4-ethoxybenzenethiol (CAS 1378801-10-5)
- 1-(4-Chloro-5-ethylthiophen-2-yl)ethan-1-one (CAS 1399661-79-0)
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Recommended Standards
- 4-Chloro-1-(thiophen-2-yl)butan-1-one (CAS 43076-59-1)
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- 2-(3,5-Dichloropyridin-2-yl)-2-phenylacetonitrile (CAS 865074-91-5)
- 3-Chloro-2-{[7-(4-methylphenyl)-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]sulfanyl}-5-(trifluoromethyl)pyridine (CAS 338775-16-9)
- 1,4-Dichlorodibenzo-p-dioxin (CAS 54536-19-5)
- 3-(methylamino)thietane-3-carbonitrile (CAS 1936076-22-0)
- 3-{methyl[(pyridin-2-yl)methyl]amino}propanoic acid (CAS 924845-60-3)
- Methyl 3-amino-4-methylpentanoate hydrochloride (CAS 1219839-34-5)
- Semaglutide Impurity 189 (CAS CATO-C4X-2226189)
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