2-(Chloromethyl)benzenethiol CAS 4521-40-8
| CAS No. | 4521-40-8 |
| Molecular Formula | C7H7ClS |
| Molecular Weight | 158.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-(Chloromethyl)benzenethiol (CAS 4521-40-8), molecular formula C7H7ClS and molecular weight 158.65 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H7ClS, 2-(Chloromethyl)benzenethiol contains sulfur-containing functionality, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 158.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.) | 1958 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chloromethyl Standards
- 4-(Chloromethyl)-1,3,5-trimethyl-1H-pyrazole (CAS 1152497-50-1)
- 5-(Chloromethyl)-1-(propan-2-yl)-1H-pyrazole (CAS 1260658-90-9)
- 3-(chloromethyl)-1-isopropyl-1H-pyrazole (CAS 1260659-10-6)
- 4-(Chloromethyl)-1-isopropyl-1H-pyrazole (CAS 1338494-95-3)
- 3-(Chloromethyl)-1-propyl-1h-pyrazole (CAS 1707359-95-2)
- 1-(Chloromethyl)-3,4,5-trimethyl-1H-pyrazole (CAS 787513-31-9)
- 2-(Chloromethyl)-1-isopropyl-1h-imidazole (CAS 773817-02-0)
- 5-(Chloromethyl)-1-isopropyl-1H-imidazole (CAS 776290-49-4)
Recommended Standards
- (3-Chlorophenyl)methanethiol (CAS 25697-57-8)
- 2-Chloro benzyl mercaptan (CAS 39718-00-8)
- 2-Chloro-6-methylthiophenol (CAS 18858-05-4)
- 2-Chloro-3-methylbenzenethiol (CAS 90825-53-9)
- Batimastat (CAS 130370-60-4)
- 2-Cyano-4-(4-cyanophenyl)phenol (CAS 313366-70-0)
- (R)-1-(5-methylfuran-2-yl)ethanamine hydrochloride (CAS 2088935-04-8)
- N-(2-(5-Bromo-1H-indol-3-yl)ethyl)-2-(trifluoromethyl)benzamide (CAS 920537-71-9)
- 5-(4-Butylphenyl)-1H-pyrazole-3-carboxylic acid (CAS 1038914-12-3)
- 2-[(2S)-2-methylpiperazin-1-yl]acetic acid;hydrochloride (CAS 2387567-26-0)
- 3-Phenyl-2-(2-(pyrrolidin-1-yl)ethoxy)-4H-pyrazino[1,2-a]pyrimidin-4-one hydrobromide (CAS 21271-24-9)
- Methyl 2-(3-amino-5-bromophenyl)acetate (CAS 934709-50-9)
- 1-(2-Fluoro-phenoxymethyl)-1h-pyrazole-3-carboxylic acid hydrazide (CAS 1006488-07-8)
- Semaglutide impurity 98 (CAS CATO-C4X-222698)
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