3-Chloro-5-methylbenzenethiol CAS 859792-80-6
| CAS No. | 859792-80-6 |
| Molecular Formula | C7H7ClS |
| Molecular Weight | 158.65 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.
3-Chloro-5-methylbenzenethiol (CAS 859792-80-6), molecular formula C7H7ClS and molecular weight 158.65 g/mol, is a CATO reference standard with documented purity and traceability.
3-Chloro-5-methylbenzenethiol (C7H7ClS) contains sulfur-containing functionality, chlorine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C7H7ClS |
| Molecular Weight | 158.65 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| 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.) | 1987 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
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- 4-Chloro-3-methylbenzenethiol (CAS 17178-00-6)
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- 2-(5-Bromo-1H-pyrrolo[2,3-b]pyridin-1-yl)-2-methylpropanoic acid (CAS 2091355-10-9)
- 2-Bromo-3-(difluoromethyl)-6-methoxy-5-(trifluoromethyl)pyridine (CAS 1806869-55-5)
- 2-Cyano-N-(3-morpholinopropyl)acetamide (CAS 15029-27-3)
- Bis(3-methylthien-2-yl)methanone (CAS 30717-55-6)
- Dulaglutide (CAS 923950-08-7)
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