3,5-Dibromo-2-methylthiophene CAS 29421-73-6
| CAS No. | 29421-73-6 |
| Molecular Formula | C5H4Br2S |
| Molecular Weight | 255.96 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3,5-Dibromo-2-methylthiophene.
3,5-Dibromo-2-methylthiophene (CAS 29421-73-6) is a high-purity analytical reference standard with the molecular formula C5H4Br2S and a molecular weight of 255.96 g/mol.
Based on its molecular formula C5H4Br2S, 3,5-Dibromo-2-methylthiophene contains sulfur-containing functionality, bromine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 255.96 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 | C5H4Br2S |
| Molecular Weight | 255.96 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.) | 1965 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 1 |
Related Dibromo Standards
- 2,3-Dibromo-4-methylthiophene (CAS 125257-38-7)
- 2,3-Dibromo-5-methylthiophene (CAS 30319-03-0)
- 2,4-Dibromo-3-methylthiophene (CAS 53119-66-7)
- 2,2-Dibromo-3-cyanopropionamide (CAS 143111-81-3)
- (4,5-Dibromo-1H-imidazol-2-yl)methanol (CAS 193066-54-5)
- 4,4-Dibromo-2,4-dihydro-5-methyl-3H-pyrazol-3-one (CAS 33549-66-5)
- 3,5-Dibromo-5,6-dihydropyran-2-one (CAS 137776-72-8)
- (4,5-Dibromo-furan-2-yl)-methanol (CAS 19303-43-6)
Recommended Standards
- 2-Bromo-5-(bromomethyl)thiophene (CAS 59311-27-2)
- 3-Bromo-2-(bromomethyl)thiophene (CAS 91036-44-1)
- 2-Bromo-4-(bromomethyl)thiophene (CAS 73919-93-4)
- 3-Bromo-4-(bromomethyl)thiophene (CAS 40032-80-2)
- N-(2-((3-Cyano-8-methylquinolin-2-yl)amino)ethyl)-4-methylbenzamide (CAS 606104-82-9)
- 4-Chloro-5-fluoro-2-methylphenylboronic acid (CAS 2055778-22-6)
- Fmoc-D-Cys(Mbzl)-OH (CAS 200354-41-2)
- 3-Methyl-1-propyl-1h-pyrazole-5-carbaldehyde (CAS 1351386-04-3)
- 4-Formyl-1,2,3-thiadiazole-5-carboxylic acid (CAS 1934471-23-4)
- (5-Bromo-2-chlorophenyl)methanamine (CAS 1096296-85-3)
- 5-Bromo-4-chloro-N,N-diethylpyridine-3-sulfonamide (CAS 1352541-33-3)
- N-(2-fluorophenyl)-[1,1'-biphenyl]-4-carboxamide (CAS 303990-59-2)
- 2-Fluoro-3-methyl-4-tetrahydropyranoxybenzeneboronic acid pinacol ester, 96% (CAS 1312478-93-5)
- C-Peptide (human) (CAS 33017-11-7)
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