(S)-2,2,2-trifluoro-N-(5,6,7,9-tetrahydro-3-hydroxy-1,2-dimethoxy-10-(methylthio)-9-oxobenzo[a]heptalen-7-yl)-acetamide CAS 123643-51-6
| CAS No. | 123643-51-6 |
| Molecular Formula | C21H20F3NO5S |
| Molecular Weight | 455.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including (S)-2,2,2-trifluoro-N-(5,6,7,9-tetrahydro-3-hydroxy-1,2-dimethoxy-10-(methylthio)-9-oxobenzo[a]heptalen-7-yl)-acetamide.
(S)-2,2,2-trifluoro-N-(5,6,7,9-tetrahydro-3-hydroxy-1,2-dimethoxy-10-(methylthio)-9-oxobenzo[a]heptalen-7-yl)-acetamide (CAS 123643-51-6), molecular formula C21H20F3NO5S and molecular weight 455.45 g/mol, is a CATO reference standard with documented purity and traceability.
(S)-2,2,2-trifluoro-N-(5,6,7,9-tetrahydro-3-hydroxy-1,2-dimethoxy-10-(methylthio)-9-oxobenzo[a]heptalen-7-yl)-acetamide (C21H20F3NO5S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C21H20F3NO5S |
| Molecular Weight | 455.45 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related S Standards
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- 1217782-80-3 2,2,2-Trifluoro-N-methyl-N-[(7S)-5,6,7,9-tetrahydro-10-hydroxy-1,2,3-trimethoxy-9-oxobenzo[a]heptalen-7-yl]acetamide N-Trifluoroacetyl-N-methyl-deacetylcolchiceine (CAS 1217782-80-3)
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- 1,1,1-Trifluoro-4-(5-fluoro-2,3-dihydrobenzofuran-7-yl)-4-methyl-2-(((2-methylquinolin-5-yl)amino)methyl)pentan-2-ol (CAS 1609049-24-2)
- 1,1,1-Trifluoro-N-((1S,2S)-2-((2-methoxy-6-methylphenyl)selanyl)-2,3-dihydro-1H-inden-1-yl)methanesulfonamide (CAS 2088566-84-9)
- 1,1,1-Trifluoro-N-((1S,2S)-2-((2-methyl-6-propoxyphenyl)thio)-2,3-dihydro-1H-inden-1-yl)methanesulfonamide (CAS 2840573-66-0)
Recommended Standards
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