4,4'-Dihexyl-2,2'-bithiophene CAS 135926-94-2
| CAS No. | 135926-94-2 |
| Molecular Formula | C20H30S2 |
| Molecular Weight | 334.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4,4'-Dihexyl-2,2'-bithiophene (CAS 135926-94-2), molecular formula C20H30S2 and molecular weight 334.58 g/mol, is a CATO reference standard with documented purity and traceability.
4,4'-Dihexyl-2,2'-bithiophene (C20H30S2) contains sulfur-containing functionality, an aromatic ring system. Its high carbon-to-hydrogen ratio confers good lipid solubility; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C20H30S2 |
| Molecular Weight | 334.58 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | 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.) | 1995 |
| Sulfur Atoms | 2 |
Related Dihexyl Standards
- 3,3'-Dihexyl-2,2'-bithiophene (CAS 125607-30-9)
- 3,4’-Dihexyl-2,2’-bithiophene (CAS 135926-93-1)
- 5,5'-Dihexyl-2,2'-bithiophene (CAS 211737-46-1)
- Dihexyl Phthalate (CAS 84-75-3)
- (2,5-Dihexyl-1,4-phenylene)diboronic acid (CAS 131117-66-3)
- 3,6-Dihexyl-9h-carbazole (CAS 1131605-21-4)
- 4,4'-Dihexyl-2,2'-bithiazole (CAS 180729-92-4)
- Dihexyl octanedioate (CAS 72630-13-8)
Recommended Standards
- 2-tert-Butyl-6-Chloro-3-iodoimidazo[1,2-a]pyridine (CAS 1426142-96-2)
- 2,7-di-tert-butyl-9,9-dimethylxanthene (CAS 130525-41-6)
- 1,2-Di(adamantan-1-yl)disulfane (CAS 34895-45-9)
- 5-(1,1-Dimethylethyl)-2-hydroxy-3-[tris(1-methylethyl)silyl]benzaldehyde (CAS 954382-24-2)
- 7-Ethoxy-4,5-dihydro-2H-pyrazolo[3,4-f]quinoline (CAS 135219-96-4)
- 2-Amino-4-bromo-6-fluoro-3-nitrobenzonitrile (CAS 1807698-28-7)
- 2-Ethoxyethylsulfonyl Chloride (CAS 69371-75-1)
- (R)-2-(2-Bromophenyl)pyrrolidine (CAS 1217757-46-4)
- Methyl 2-bromo-4-cyanobenzoate (CAS 98592-04-2)
- Ethyl 1-cyano-4-oxocyclohexane-1-carboxylate (CAS 58774-04-2)
- Bis(2-fluorophenyl)methanol (CAS 261925-13-7)
- 4-(4-(2-Methoxy-4-(2-(pyridin-4-yl)ethyl)phenoxy)phenethyl)pyridine dihydrochloride (CAS 1216988-71-4)
- 7-Hydroxy-3-(4-isopropylphenoxy)-2-methyl-4h-chromen-4-one (CAS 201284-88-0)
- Semaglutide impurity 92 (CAS CATO-C4X-222692)
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