4,4'-Dibromo-2,2'-bithiophene CAS 51285-60-0
| CAS No. | 51285-60-0 |
| Molecular Formula | C8H4Br2S2 |
| Molecular Weight | 324.06 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 4,4'-Dibromo-2,2'-bithiophene.
4,4'-Dibromo-2,2'-bithiophene (CAS 51285-60-0), molecular formula C8H4Br2S2 and molecular weight 324.06 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 4,4'-Dibromo-2,2'-bithiophene (C8H4Br2S2) contains sulfur-containing functionality, bromine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 324.06 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C8H4Br2S2 |
| Molecular Weight | 324.06 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 2 |
Related Dibromo Standards
- 4,5-DIBROMO-2,2'-BITHIOPHENE (CAS 1006384-44-6)
- 2,2'-Dibromo-3,3'-bithiophene (CAS 18592-86-4)
- 4,4'-Dibromo-3,3'-bithiophene (CAS 5556-13-8)
- 5,5’-Dibromo-2,2’-bithiophene (CAS 4805-22-5)
- (2,6-Dibromo-4-isopropylphenyl)(methyl)sulfane (CAS 2624416-86-8)
- 2,5-Dibromo-3-cyclohexylthiophene (CAS 302912-44-3)
- 1,4-dibromo-2,5-diethoxybenzene (CAS 101907-55-5)
- 1,4-Dibromo-2,5-bis(methoxymethyl)benzene (CAS 144526-35-2)
Recommended Standards
- Tetrasul (CAS 2227-13-6)
- (5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pentyl)boronic acid (CAS 1073371-70-6)
- N-(2-furylmethyl)methanesulfonamide (CAS 6341-33-9)
- Dimethyl (4-bromo-2-nitrobenzyl)phosphonate (CAS 1094851-36-1)
- Ethyl 6-benzyl-2-(2-chloropropanamido)-4H,5H,6H,7H-thieno[2,3-c]pyridine-3-carboxylate hydrochloride (CAS 1049746-42-0)
- (S)-(2,2-Difluorotetrahydro-1H-pyrrolizin-7a(5H)-yl)methanol (CAS 2820537-01-5)
- N-(((9H-fluoren-9-yl)methoxy)carbonyl)-N-(3-((tert-butoxycarbonyl)amino)propyl)glycine (CAS 143192-31-8)
- 2-Ethyl-5-styrylbenzene-1,3-diol (CAS 79338-80-0)
- 2,5-Furandione, 2-(2-phenylhydrazone) (CAS 52726-95-1)
- Riociguat impurity 27 (CAS CATO-C4X-174927)
- 2-methoxy-6-(1H-pyrrol-1-ylmethyl)pyridine (CAS 1341376-97-3)
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- n-(4-(n-(4-(Trifluoromethoxy)phenyl)sulfamoyl)phenyl)acetamide (CAS 690987-83-8)
- [y-Glu15]-Semaglutide Impurity 134 (CAS CATO-C4X-2226134)
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