3-Bromo-2,4,5-trimethylthiophene CAS 39129-53-8
| CAS No. | 39129-53-8 |
| Molecular Formula | C7H9BrS |
| Molecular Weight | 205.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 205.12 g/mol gives 3-Bromo-2,4,5-trimethylthiophene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3-Bromo-2,4,5-trimethylthiophene (CAS 39129-53-8), a certified reference material (molecular formula C7H9BrS, MW 205.12 g/mol) for analytical method development and quality control.
Owing to sulfur-containing functionality, bromine substitution, 3-Bromo-2,4,5-trimethylthiophene is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 205.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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 | C7H9BrS |
| Molecular Weight | 205.12 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.) | 1968 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Bromo Standards
- 3-Bromo-4-isopropylthiophene (CAS 1369146-51-9)
- 2-Bromo-5-propylthiophene (CAS 172319-75-4)
- 3-Bromo-4-propylthiophene (CAS 187661-10-5)
- 2-Bromo-3-isopropylthiophene (CAS 29488-36-6)
- 2-Bromo-5-isopropylthiophene (CAS 29488-23-1)
- 3-Bromo-2-isopropylthiophene (CAS 2363782-33-4)
- 4-Bromo-2-propylthiophene (CAS 36155-79-0)
- 1-Bromo-3-isopropyl-4-methylpent-2-ene (CAS 1115-21-5)
Recommended Standards
- 2-(Bromomethyl)-5-ethylthiophene (CAS 442910-38-5)
- 2-(4-(Trifluoromethyl)pyridin-2-yl)acetic acid (CAS 1000515-78-5)
- 2-(3-Bromopropyl)thiophene (CAS 30134-51-1)
- 3-(Trifluoromethyl)pyridine-5-acetic acid (CAS 1000516-17-5)
- Ethyl 2-{[3-(2-chloro-6-fluorophenyl)-5-methyl-1,2-oxazol-4-yl]formamido}-4-(methylsulfanyl)butanoate (CAS 1008931-50-7)
- 4-Methyl-2-(pyridin-3-yl)pyrimidine-5-carboxylic acid (CAS 933988-81-9)
- 3-(4-Bromophenyl)-5-p-tolyl-1,2,4-oxadiazole (CAS 587006-12-0)
- 5,6-Diethyl-1H-benzo[d]imidazole (CAS 69557-56-8)
- Itraconazole Impurity 32 (CAS CATO-C4X-149732)
- 4-Amino-5-fluoropentanoic acid (CAS 70960-97-3)
- 2-Chloro-4-(4h-1,2,4-triazol-4-yl)phenol (CAS 937792-37-5)
- 1-(3,4-Dihydro-2h-chromen-3-yl)methanamine Hydrochloride (CAS 113771-75-8)
- (R)-2-(3-fluoro-4-(trifluoromethoxy)phenyl)-2-(methylamino)ethan-1-ol (CAS 1335955-69-5)
- Insulin Glargine (CAS 160337-95-1)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
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