5,11-Dimethylbenzo[4,5]thieno[2,3-g]isoquinoline 6,6-dioxide CAS 23018-38-4
| CAS No. | 23018-38-4 |
| Molecular Formula | C17H13NO2S |
| Molecular Weight | 295.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5,11-Dimethylbenzo[4,5]thieno[2,3-g]isoquinoline 6,6-dioxide (CAS 23018-38-4), molecular formula C17H13NO2S and molecular weight 295.36 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 5,11-Dimethylbenzo[4,5]thieno[2,3-g]isoquinoline 6,6-dioxide (C17H13NO2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 12.0, corresponding to approximately 12 ring(s) or double-bond equivalent(s). With a molecular weight of 295.36 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C17H13NO2S |
| Molecular Weight | 295.36 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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