3-Bromo-2-(methylthio)thiophene CAS 66768-75-0
| CAS No. | 66768-75-0 |
| Molecular Formula | C5H5BrS2 |
| Molecular Weight | 209.13 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3-Bromo-2-(methylthio)thiophene (C5H5BrS2) contains sulfur-containing functionality, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 209.13 g/mol, it falls into the medium-molecular-weight range. 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).
3-Bromo-2-(methylthio)thiophene (CAS 66768-75-0), molecular formula C5H5BrS2 and molecular weight 209.13 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C5H5BrS2 |
| Molecular Weight | 209.13 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1976 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 2 |
Related Bromo Standards
- 2-bromo-3-(methylsulfanyl)thiophene (CAS 94781-39-2)
- 2-Bromo-5-(methylthio)thiophene (CAS 86369-96-2)
- 4-Bromo-2-(methylthio)thiophene (CAS 87310-65-4)
- 7-Bromo-2-methylheptan-2-ol (CAS 107768-04-7)
- 1-Bromo-4-isobutoxybutane (CAS 1094698-14-2)
- 1-Bromo-2-(propoxymethyl)butane (CAS 1472702-35-4)
- 1-Bromo-3-isopropoxy-2,2-dimethylpropane (CAS 1483279-60-2)
- 1-Bromo-4-isopropoxy-2-methylbutane (CAS 1483950-00-0)
Recommended Standards
- 3-(3,3,3-trifluoropropyl)triazole-4-carboxylic acid (CAS 2735653-49-1)
- 2H-1-benzopyran-2-one, 6-fluoro-3-nitro- (CAS 907212-86-6)
- 4-Fluoro-6-nitro-1H-indazole-3-carbaldehyde (CAS 885522-99-6)
- 5-Amino-1-methyl-3-trifluoromethyl-1H-pyrazole-4-carboxylic acid (CAS 317806-51-2)
- 3-(4-Bromophenyl)butanoic acid (CAS 53086-46-7)
- Quinoline-7-carboxamide (CAS 99361-21-4)
- 3-(2-Methoxyethyl)-2-methyl-5-phenylbenzo[d]oxazol-3-ium 4-methylbenzenesulfonate (CAS 63979-86-2)
- 6-Aminohexanoyl chloride (CAS 66678-88-4)
- 17α(H),21β(H)-hopane solution (CAS 13849-96-2)
- 1-Methyl-3-tetradecyl-2,3-dihydro-1H-imidazol-1-ium hexafluorophosphate(V) (CAS 219947-94-1)
- (2-AMINO-3-METHYL-PHENYL)-METHANOL (2-Amino-3-methylphenyl)methanol 2-AMINO-3-METHYLBENZYL ALCOHOL 2-AMino-3-Methylbenzyl alcohol 97% 57772-50-6 AS06954 (CAS 57772-50-6)
- sodium 1,3-thiazole-5-carboxylate (CAS 26862-80-6)
- (R)-2-Amino-3,3-diphenylpropan-1-ol (CAS 171037-01-7)
- Liraglutide Impurity 25 (CAS CATO-C4X-199225)
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