5'-Bromo-3,4'-dihexyl-2,2'-bithiophene CAS 154717-21-2
| CAS No. | 154717-21-2 |
| Molecular Formula | C20H29BrS2 |
| Molecular Weight | 413.48 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 5'-Bromo-3,4'-dihexyl-2,2'-bithiophene.
CATO supplies 5'-Bromo-3,4'-dihexyl-2,2'-bithiophene (CAS 154717-21-2), a certified reference material (molecular formula C20H29BrS2, MW 413.48 g/mol) for analytical method development and quality control.
5'-Bromo-3,4'-dihexyl-2,2'-bithiophene (C20H29BrS2) contains sulfur-containing functionality, bromine substitution, an aromatic ring system. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C20H29BrS2 |
| Molecular Weight | 413.48 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| 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.) | 2001 |
| Halogen Content | Br-containing |
| Sulfur Atoms | 2 |
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Recommended Standards
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- 5-Bromo-N-((tetrahydrothiophen-2-yl)methyl)thiophene-2-carboxamide (CAS 1424040-00-5)
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- 3-Cyano-5-methyl-1H-pyrazole-4-carboxylic acid (CAS 191419-06-4)
- methyl 2-(3-(trifluoromethyl)benzamido)acetate (CAS 131648-66-3)
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Why CATO?
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