| CAS No. | 1247791-23-6 |
| Molecular Formula | C20H21NO6S |
| Molecular Weight | 403.45 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Compared with other compounds in its class, the molecular weight of 403.45 g/mol gives (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(methylsulfonyl)butanoic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(methylsulfonyl)butanoic acid (CAS 1247791-23-6) is a high-purity analytical reference standard with the molecular formula C20H21NO6S and a molecular weight of 403.45 g/mol.
Owing to a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(methylsulfonyl)butanoic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 403.45 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
| Molecular Formula | C20H21NO6S |
| Molecular Weight | 403.45 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 |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |