Poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8- diyl-alt-thiophene-2,5-diyl] CAS 565228-37-7
| CAS No. | 565228-37-7 |
| Molecular Formula | C43H53NO2S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
Poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8- diyl-alt-thiophene-2,5-diyl] (CAS 565228-37-7) is a high-purity analytical reference standard with the molecular formula C43H53NO2SN and a molecular weight of 661.97 g/mol.
The molecular framework of Poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8- diyl-alt-thiophene-2,5-diyl] (C43H53NO2SN) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C43H53NO2S N |
| Molecular Weight | 661.97 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 18.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Recommended Standards
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- 2-Chloro-6-(2-methyl-5-nitrophenyl)-5,8-dihydropyrido[4,3-d]pyrimidin-7(6H)-one (CAS CATO-CIM-100614)
- N-(2-Chloroethylidene)-2-methylpropane-2-sulfinamide (CAS 1036645-69-8)
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- tert-Butyl 4-hydroxy-4-((methylamino)methyl)piperidine-1-carboxylate (CAS 1073559-55-3)
- Semaglutide Impurity 177 (CAS CATO-C4X-2226177)
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