2,5-dibromothieno[3,2-b]thiophene CAS 25121-87-3
| CAS No. | 25121-87-3 |
| Molecular Formula | C6H2Br2S2 |
| Molecular Weight | 298.02 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
2,5-dibromothieno[3,2-b]thiophene (CAS 25121-87-3) is a high-purity analytical reference standard with the molecular formula C6H2Br2S2 and a molecular weight of 298.02 g/mol.
Based on its molecular formula C6H2Br2S2, 2,5-dibromothieno[3,2-b]thiophene contains sulfur-containing functionality, bromine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 298.02 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.) | 1964 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 2 |
Related dibromothieno Standards
- 3,6-Dibromothieno[3,2-b]thiophene (CAS 392662-65-6)
- 5,6-Dibromothieno[2,3-d]pyrimidine (CAS 1841081-51-3)
- 4,6-Dibromothieno[2,3-d]pyrimidine (CAS 56844-15-6)
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Recommended Standards
- 2,5-Dibromo-thieno[2,3-b]thiophene (CAS 25121-86-2)
- 3,4-Dibromo-thieno[2,3-b]thiophene (CAS 53255-78-0)
- (4-(4-(Trifluoromethoxy)phenoxy)phenyl)boronic acid (CAS 958457-41-5)
- 3,7-dibromo-1,5-naphthyridine (CAS 17965-72-9)
- 2-(4-Bromo-5-(difluoromethyl)-6-methoxypyridin-3-yl)acetic acid (CAS 1805428-02-7)
- Naphtholas-lt (CAS 3689-20-1)
- 2-Amino-4-chloro-6-isopropylpyrimidine (CAS 73576-33-7)
- Abemaciclib Impurity 91 (CAS 937605-75-9)
- 5-(Bromomethyl)quinoline hydrobromide (CAS 1562194-63-1)
- 5-Chloro-6-morpholinonicotinic acid (CAS 856167-98-1)
- 1,2-Dimethyl-1H-benzo[d]imidazol-4-ol (CAS 177477-62-2)
- Bumetanide Impurity 99 (CAS CATO-C4X-198699)
- 1,2-Cyclohexanediol,4-(1,1-dimethylethyl)- (CAS 67027-80-9)
- Semaglutide Impurity 140 (CAS CATO-C4X-2226140)
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