(S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,4-difluorophenyl)butanoic acid CAS 1956435-29-2
| CAS No. | 1956435-29-2 |
| Molecular Formula | C25H21F2NO4 |
| Molecular Weight | 437.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,4-difluorophenyl)butanoic acid (C25H21F2NO4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 15.0, corresponding to approximately 15 ring(s) or double-bond equivalent(s). With a molecular weight of 437.44 g/mol, it falls into the moderately-high-molecular-weight range. 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).
CATO supplies (S)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,4-difluorophenyl)butanoic acid (CAS 1956435-29-2), a certified reference material (molecular formula C25H21F2NO4, MW 437.44 g/mol) for analytical method development and quality control.
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 | C25H21F2NO4 |
| Molecular Weight | 437.44 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(4-(difluoromethyl)phenyl)propanoic acid (CAS 1808268-08-7)
- (R)-3-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,4-difluorophenyl)butanoic acid (CAS 1956436-07-9)
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