(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,6-difluorophenyl)butanoic acid CAS 1260601-15-7
| CAS No. | 1260601-15-7 |
| Molecular Formula | C25H21F2NO4 |
| Molecular Weight | 437.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,6-difluorophenyl)butanoic acid (CAS 1260601-15-7), molecular formula C25H21F2NO4 and molecular weight 437.44 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C25H21F2NO4, (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,6-difluorophenyl)butanoic acid contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 437.44 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.) | 1990 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
Recommended Standards
- (R)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-4-(2,5-difluorophenyl)butanoic acid (CAS 1260601-14-6)
- (S)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(2,5-difluorobenzyl)propanoic acid (CAS 1260601-16-8)
- (S)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(2,3-difluorobenzyl)propanoic acid (CAS 1260594-34-0)
- Fmoc-2,4-difluoro-L-homophenylalanine (CAS 1260607-93-9)
- 4-Ethylphenyl isocyanide (CAS 143063-89-2)
- N-Ethyl-4-methyl-N-phenylbenzamide (CAS 70020-14-3)
- Potassium 2-(difluoromethylene)-1,1,1-trifluoro-3,5,8-trioxa-1-boranonan-1-uide (CAS 1131736-79-2)
- 2-((3-Nitroimidazo[1,2-a]pyridin-2-yl)amino)acetic acid (CAS 62194-95-0)
- 3-Aminocarbonyl-2-fluorophenylboronic acid (CAS 1451392-76-9)
- 3-[3-(propan-2-yl)-1,2,4-oxadiazol-5-yl]propanoic acid (CAS 947013-67-4)
- Sulpiride Impurity 21 (CAS 2267259-70-9)
- 2-Chloro-4-methanesulfonyl-N-{4-[(4-methylphenyl)sulfanyl]phenyl}benzamide (CAS 339096-18-3)
- BMS-856 (CAS 863382-83-6)
- D-[Phe]6-Liraglutide (CAS CATO-C4X-199235)
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