Desbenzyl N-Acetyl-di-O-acetyl KRP-203 CAS 951238-24-7
| CAS No. | 951238-24-7 |
| Molecular Formula | C23H26ClNO6S |
| Molecular Weight | 479.97 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Desbenzyl N-Acetyl-di-O-acetyl KRP-203 (CAS 951238-24-7), molecular formula C23H26ClNO6S and molecular weight 479.97 g/mol, is a CATO reference standard with documented purity and traceability.
Desbenzyl N-Acetyl-di-O-acetyl KRP-203 (C23H26ClNO6S) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, chlorine 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 | C23H26ClNO6S |
| Molecular Weight | 479.97 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.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Desbenzyl Standards
Recommended Standards
- SANT-2 (CAS 329196-48-7)
- 2-((5-(4-Chlorophenyl)-4-(p-tolyl)-4H-1,2,4-triazol-3-yl)thio)-1-(2,5-dimethoxyphenyl)ethanone (CAS 477331-66-1)
- Ethyl 4-[3-(4-chlorobenzenesulfonamido)phenoxy]-2-(methylsulfanyl)pyrimidine-5-carboxylate (CAS 478065-14-4)
- 2-((5-(4-Chlorophenyl)-4-(p-tolyl)-4H-1,2,4-triazol-3-yl)thio)-1-(3,4-dimethoxyphenyl)ethanone (CAS 477332-89-1)
- 8-Bromo-6-chloroquinolin-4-ol (CAS 1388060-25-0)
- Methyl 6-aminospiro[2.5]octane-1-carboxylate hydrochloride (CAS 2138075-94-0)
- Sulfuric acid, monoisodecyl ester, sodium salt (CAS 68299-17-2)
- 2-(2-((2,2-Dimethyl-2,3-dihydrobenzofuran-7-yl)oxy)acetyl)-N-phenylhydrazine-1-carboxamide (CAS 1023498-27-2)
- 2-(3-Acetylphenoxy)-1-morpholinoethan-1-one (CAS 312535-87-8)
- Ruxolitinib Impurity 3 (CAS 2102675-40-9)
- N-(4-nitrophenyl)-2-((4-phenyl-5-(m-tolyl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 505065-03-2)
- Ethyl 6-(4-(tert-butyl)phenyl)-6-oxohexanoate (CAS 898778-44-4)
- 2-((4-Methoxybenzyl)thio)-5-methylpyrazine (CAS 147032-14-2)
- Semaglutide impurity 33 (CAS CATO-C4X-222633)
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