1-Bromo-4-methyl-2-(methylthio)benzene CAS 143701-84-2
| CAS No. | 143701-84-2 |
| Molecular Formula | C8H9BrS |
| Molecular Weight | 217.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 1-Bromo-4-methyl-2-(methylthio)benzene is closely related to sulfur-containing functionality, bromine substitution, an aromatic ring system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
1-Bromo-4-methyl-2-(methylthio)benzene (CAS 143701-84-2), molecular formula C8H9BrS and molecular weight 217.13 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H9BrS, 1-Bromo-4-methyl-2-(methylthio)benzene contains sulfur-containing functionality, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 217.13 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C8H9BrS |
| Molecular Weight | 217.13 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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.) | 1998 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 2-Bromo-4,5,6,7-tetrahydrobenzo[b]thiophene (CAS 111873-07-5)
- 2-Bromo-4,5-dimethylbenzenethiol (CAS 1263376-02-8)
- 3-Bromo-4,5,6,7-tetrahydro-1-benzothiophene (CAS 1310427-77-0)
- 5-Bromo-2-methylthioanisole (CAS 142994-01-2)
- 2-Bromo-4,6-dimethylbenzenethiol (CAS 14395-57-4)
- 3-Bromo-1-ethanesulfanylbenzene (CAS 18184-69-5)
- (3-Bromo-5-methylphenyl)(methyl)sulfane (CAS 1824587-08-7)
- 2-Bromo-4-ethylthiophenol (CAS 193200-34-9)
Recommended Standards
- 2-(2,3-Difluoro-6-nitrophenyl)acetic acid (CAS 141428-47-9)
- 2-(difluoromethoxy)-5-nitrobenzaldehyde (CAS 145742-63-8)
- 2-(2-Bromoallyl)-5-methylthiophene (CAS 1378867-11-8)
- (4-Bromobenzyl)(methyl)sulfane (CAS 15733-07-0)
- 2-Cyano-n-pentylacetamide (CAS 39488-46-5)
- 4-Bromo-8-chloro-5-methoxy-2-propylquinoline (CAS 1189105-76-7)
- 2-Isopropoxy-4-methoxyaniline (CAS 1369945-74-3)
- 2-Bromo-N-(2,4,5-trichlorophenyl)acetamide (CAS 19889-61-3)
- (S)-3-((tert-Butoxycarbonyl)amino)-2-(4-methylphenylsulfonamido)propanoic acid (CAS 16947-86-7)
- Prop-2-yn-1-yl benzoate Propargyl benzoate 6750-04-5 (CAS 6750-04-5)
- Ethyl (3Z)-3-cyano-4-[(4-methoxyphenyl)amino]-2-oxobut-3-enoate (CAS 339106-26-2)
- N-Methoxy-N-methylacetamide (CAS 78191-00-1)
- 3,4-dimethyl-5-nitrobenzenesulfonamide (CAS 838838-15-6)
- Semaglutide impurity 68 (CAS CATO-C4X-222668)
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