4-Chloro-3-methylbenzenethiol CAS 17178-00-6
| CAS No. | 17178-00-6 |
| 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.
4-Chloro-3-methylbenzenethiol (CAS 17178-00-6), molecular formula C7H7ClS and molecular weight 158.65 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Chloro-3-methylbenzenethiol (C7H7ClS) is characterized by sulfur-containing functionality, 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), 4-Chloro-3-methylbenzenethiol 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 | 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.) | 1961 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloro Standards
- (Chloro-difluoro-methyl)-trimethyl-silane (CAS 115262-00-5)
- 2-Chloro-5-(prop-1-en-2-yl)thiophene (CAS 142019-00-9)
- 4-Chloro-2-methylbenzenethiol (CAS 17178-01-7)
- 3-(5-Chloro-2-thienyl)-1-propene (CAS 173415-71-9)
- 3-Chloro-4-methylbenzenethiol (CAS 18800-45-8)
- 2-Chloro-6-methylthiophenol (CAS 18858-05-4)
- 2-Chloro benzyl mercaptan (CAS 39718-00-8)
- 2-Chloro-3-methylbenzenethiol (CAS 90825-53-9)
Recommended Standards
- 2-(2-Chloroallyl)thiophene (CAS 1314915-84-8)
- Losartan Impurity 18 (CAS 158365-99-2)
- 66909-34-0 2-Chloro-5-methylpyridine-3-carbonitrile DTXSID00495836 (CAS 66909-34-0)
- (3-Chlorophenyl)methanethiol (CAS 25697-57-8)
- SR 3677 dihydrochloride (CAS 1781628-88-3)
- 1869954-38-0 [1-(2,2-dimethylpropyl)-1H-indol-3-yl]-2-naphthalenyl-methanone (CAS 1869954-38-0)
- 2-(1-Ethylpyrrolidin-2-yl)-4-methylpyridine (CAS 1352499-47-8)
- 5-((6-Acetamidopyrimidin-4-yl)oxy)-N-(4-((4-methylpiperazin-1-yl)methyl)-3-(trifluoromethyl)phenyl)indoline-1-carboxamide (CAS 882405-89-2)
- 3-Methyl-2-(naphthalene-2-sulfonamido)butanoic acid (CAS 115239-41-3)
- 2-[(Butylamino)methyl]-6-ethoxyphenol (CAS 1019490-15-3)
- 3-(5-Chloro-1-methyl-1H-benzo[d]imidazol-2-yl)propan-1-ol (CAS 1243551-71-4)
- (2R,3S,4R,5R)-2,3,4-Tris(benzyloxy)-5,6-dihydroxyhexanal (CAS 50272-02-1)
- Sodium 7-phenyl-5,9-bis(phenylamino)benzo[a]phenazin-7-ium-4,10-disulfonate (CAS 6378-88-7)
- Acetyl Hexapeptide-38 (CAS 1400634-44-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com