3,4-Dibromo-thieno[2,3-b]thiophene CAS 53255-78-0
| CAS No. | 53255-78-0 |
| Molecular Formula | C6H2Br2S2 |
| Molecular Weight | 298.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 298.02 g/mol gives 3,4-Dibromo-thieno[2,3-b]thiophene distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 3,4-Dibromo-thieno[2,3-b]thiophene (CAS 53255-78-0), a certified reference material (molecular formula C6H2Br2S2, MW 298.02 g/mol) for analytical method development and quality control.
Owing to sulfur-containing functionality, bromine substitution, an aromatic ring system, 3,4-Dibromo-thieno[2,3-b]thiophene is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 298.02 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 | C6H2Br2S2 |
| Molecular Weight | 298.02 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 2 |
Related Dibromo Standards
- 2,8-dibromo-1,5-naphthyridine (CAS 1363380-58-8)
- 3,8-dibromo-1,5-naphthyridine (CAS 154015-16-4)
- 3,7-dibromo-1,5-naphthyridine (CAS 17965-72-9)
- 2,5-Dibromo-thieno[2,3-b]thiophene (CAS 25121-86-2)
- 3,8-dibromo-1,7-naphthyridine (CAS 2759952-06-0)
- 2,5-Dibromo-3-butylthiophene (CAS 116971-10-9)
- 2,2-Dibromo-1-(5-methylthiophen-2-yl)ethanone (CAS 122654-08-4)
- 3,4-Dibromo-2,2,5,5-tetramethyl-1-(l1-oxidaneyl)-2,5-dihydro-1H-pyrrole (CAS 78033-68-8)
Recommended Standards
- 2,5-dibromothieno[3,2-b]thiophene (CAS 25121-87-3)
- 3,6-Dibromothieno[3,2-b]thiophene (CAS 392662-65-6)
- (4-(4-(Trifluoromethoxy)phenoxy)phenyl)boronic acid (CAS 958457-41-5)
- 8-bromo-5-(bromomethyl)imidazo[1,2-a]pyridine (CAS 2417422-08-1)
- N-(2-Cyanopyridin-3-yl)pivalamide (CAS 887579-95-5)
- 1-(Difluoromethyl)-N-((1-isopropyl-1H-pyrazol-4-yl)methyl)-1H-pyrazol-3-amine hydrochloride (CAS 1855949-64-2)
- N-Benzoylglycine-2,2-d2 (CAS 208928-78-3)
- Titanium acetylacetonate (CAS 97281-09-9)
- 4-Bromo-1-(2,2-difluorocyclopropyl)-1H-pyrazole (CAS 2173998-80-4)
- Tizanidine Impurity 56 (CAS CATO-C4X-144556)
- (2S,3R,4S,5R,6R)-2-(chloromethyl)-6-methoxytetrahydro-2H-pyran-3,4,5-triol (CAS 58178-94-2)
- (E)-4-(2,2-difluoroethoxy)benzaldehyde oxime (CAS 1245782-77-7)
- (Z)-(Propyl N-(2,4-dichlorophenyl)-1-methyl-1H-imidazole-5-carboximidate) (CAS 105371-54-8)
- Insulin Degludec Impurity 11 (CAS CATO-C4X-215711)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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