5-Bromo-2,3-dimethylthiophene CAS 172319-78-7
| CAS No. | 172319-78-7 |
| Molecular Formula | C6H7BrS |
| Molecular Weight | 191.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 191.09 g/mol gives 5-Bromo-2,3-dimethylthiophene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-Bromo-2,3-dimethylthiophene (CAS 172319-78-7), molecular formula C6H7BrS and molecular weight 191.09 g/mol, is a CATO reference standard with documented purity and traceability.
5-Bromo-2,3-dimethylthiophene (C6H7BrS) contains sulfur-containing functionality, bromine substitution. 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.
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 | C6H7BrS |
| Molecular Weight | 191.09 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 2006 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 2-Bromo-3-ethylthiophene (CAS 53119-61-2)
- 2-Bromo-5-ethylthiophene (CAS 62323-44-8)
- 3-Bromo-2,4-dimethylthiophene (CAS 79485-96-4)
- 3-Bromo-4-ethylthiophene (CAS 83663-39-2)
- 4-Bromo-2-ethylthiophene (CAS 83663-40-5)
- 2-Bromo-3,4-dimethylthiophene (CAS 169328-87-4)
- 2-Bromo-2-methylcyclohexanone (CAS 10409-47-9)
- 2-Bromo-1-cyclohexene-1-methanol (CAS 117360-45-9)
Recommended Standards
- 4-(Bromomethyl)-2-methylthiophene (CAS 171515-92-7)
- 2-(1-Bromoethyl)thiophene, 97% (CAS 93449-09-3)
- 2-(Bromomethyl)-3-methylthiophene (CAS 152147-52-9)
- 2-(Bromomethyl)-4-methylthiophene (CAS 79758-01-3)
- 2,2-difluoro-2-(2-methylphenyl)ethan-1-amine hydrochloride (CAS 1955547-60-0)
- 1-(oxolan-2-yl)butan-2-one (CAS 1183353-23-2)
- N-(3-Amino-2-methylphenyl)-2-(dimethylamino)acetamide (CAS 946782-98-5)
- (S)-3-(((Benzyloxy)carbonyl)amino)-5-(tert-butoxy)-5-oxopentanoic acid (CAS 118247-88-4)
- 4-Amino-5-(difluoromethyl)-3-nitropicolinoyl chloride (CAS 1805357-62-3)
- 1-(4-Bromophenyl)-2-[(5-phenyl-1,3,4-oxadiazol-2-yl)sulfanyl]ethan-1-one (CAS 404583-76-2)
- 1-(2-Bromo-1-isopropoxyethyl)-3-chlorobenzene (CAS 1248016-19-4)
- 4-(2-(2-Ethylthiophen-3-yl)ethyl)-1H-imidazole (CAS 443923-44-2)
- Laurotetanine impurity 1 (CAS 128-76-7)
- Semaglutide impurity 195 (CAS CATO-C4X-2226195)
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