4,8-Bis(4-chloro-5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene CAS 2237223-05-9
| CAS No. | 2237223-05-9 |
| Molecular Formula | C34H40Cl2S4 |
| Molecular Weight | 647.85 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.
4,8-Bis(4-chloro-5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene (CAS 2237223-05-9) is a high-purity analytical reference standard with the molecular formula C34H40Cl2S4 and a molecular weight of 647.85 g/mol.
Owing to sulfur-containing functionality, chlorine substitution, a polycyclic aromatic system, 4,8-Bis(4-chloro-5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 647.85 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.
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 | C34H40Cl2S4 |
| Molecular Weight | 647.85 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) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1998 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 4 |
Related Bis Standards
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Recommended Standards
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- 2-(2,4,5,7-Tetrabromo-6-hydroxy-3-oxo-3H-xanthen-9-yl)benzoic acid (CAS 152-75-0)
- 1-methyl-4-(2-thienyl)-1{H}-pyrazolo[3,4-{b}]pyridine-3-carboxylic acid (CAS 1356543-40-2)
- 4-Amino-2-(3-chlorophenyl)butan-2-ol (CAS 1114064-27-5)
- Methyl pent-4-enimidate hydrochloride (CAS 104783-94-0)
- Methyl (E)-2-(1-(3-aminophenyl)ethylidene)hydrazine-1-carboxylate (CAS 356102-37-9)
- pyrido[2,3-b]pyrazine-6-carboxylic acid (CAS 893723-33-6)
- Acetamide, n-[6-(1,3-dioxolan-2-yl)-4-methyl-3-pyridinyl]- (CAS 143621-41-4)
- 4-Hydroxy-2',3,3',4',5'-pentachlorobiphenyl (CAS 192190-09-3)
- Propranolol hydrochloride (CAS 318-98-9)
- 6-Bromoisoquinoline 2-Oxide (CAS 223671-16-7)
- Semaglutide Impurity 82 (CAS CATO-C4X-222682)
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