Thieno[2,3-b]quinoxaline CAS 54101-62-1
| CAS No. | 54101-62-1 |
| Molecular Formula | C10H6N2S |
| Molecular Weight | 186.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Thieno[2,3-b]quinoxaline (CAS 54101-62-1) is a high-purity analytical reference standard with the molecular formula C10H6N2S and a molecular weight of 186.23 g/mol.
Based on its molecular formula C10H6N2S, Thieno[2,3-b]quinoxaline contains a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 186.23 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
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 | C10H6N2S |
| Molecular Weight | 186.23 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Thieno Standards
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- 4H-Thieno[3,2-b]pyrrole-5-carbonyl chloride (CAS 182553-05-5)
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- thieno[3,2-b]pyridine-6-carboxylic acid (CAS 117390-39-3)
- thieno[3,2-b]pyridine-7-carboxylic acid (CAS 1416714-01-6)
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