3,4-Dichloro-N-(9-oxo-9H-thioxanthen-2-yl)benzamide CAS 478248-51-0
| CAS No. | 478248-51-0 |
| Molecular Formula | C20H11Cl2NO2S |
| Molecular Weight | 400.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3,4-Dichloro-N-(9-oxo-9H-thioxanthen-2-yl)benzamide is closely related to a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3,4-Dichloro-N-(9-oxo-9H-thioxanthen-2-yl)benzamide (CAS 478248-51-0) is a high-purity analytical reference standard with the molecular formula C20H11Cl2NO2S and a molecular weight of 400.28 g/mol.
3,4-Dichloro-N-(9-oxo-9H-thioxanthen-2-yl)benzamide (C20H11Cl2NO2S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine substitution. Halogen substitution raises its density and boiling point, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; 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.
As a certified reference material (CRM), 3,4-Dichloro-N-(9-oxo-9H-thioxanthen-2-yl)benzamide meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C20H11Cl2NO2S |
| Molecular Weight | 400.28 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
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Recommended Standards
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- 2-(3,4-Dichlorophenyl)-6-(3-fluorobenzyl)-5,7-dimethylpyrazolo[1,5-a]pyrimidine (CAS 477850-29-6)
- 6-Chloro-N-(2-((4-chlorophenyl)thio)-5-cyanophenyl)nicotinamide (CAS 303147-37-7)
- 3-(Cyclohexylcarbamoyl)-1,2,2-trimethylcyclopentane-1-carboxylic acid (CAS 452346-64-4)
- Methyl 3-(4-iodo-1H-pyrazol-1-yl)propanoate (CAS 1175275-82-7)
- 6-(Trifluoromethyl)morpholine-2-carboxylic acid (CAS 1375473-07-6)
- 5-Amino-4-cyano-3-(cyanomethyl)pyrazole (CAS 54711-21-6)
- 2-Amino-7-(4-chlorophenyl)-7,8-dihydro-5(6H)-quinazolinone (CAS 299934-41-1)
- Methyl 2-acetyl-5-phenylpentanoate (CAS 97228-23-4)
- 1-((Tert-butoxycarbonyl)(methyl)amino)-3,3-difluorocyclobutane-1-carboxylic acid (CAS 2231676-48-3)
- 6-Amino-N-(furan-2-ylmethyl)-2-thioxo-1,2-dihydropyrimidine-5-carboxamide (CAS 898652-00-1)
- 2-(Thiophen-2-yl)pyrazolo[1,5-c]quinazolin-5(6H)-one (CAS 178625-00-8)
- Tirzepatide Impurity 21 X TFA Salt (CAS CATO-C4X-324021)
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