(R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(3,5-difluorophenyl)butanoic acid CAS 1260609-57-1
| CAS No. | 1260609-57-1 |
| Molecular Formula | C25H21F2NO4 |
| Molecular Weight | 437.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), (R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(3,5-difluorophenyl)butanoic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
(R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(3,5-difluorophenyl)butanoic acid (CAS 1260609-57-1), molecular formula C25H21F2NO4 and molecular weight 437.44 g/mol, is a CATO reference standard with documented purity and traceability.
(R)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-4-(3,5-difluorophenyl)butanoic acid (C25H21F2NO4) contains a flavonoid core, an amide 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.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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-(3,4-difluorophenyl)butanoic acid (CAS 1260609-50-4)
- (R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(3,4-difluorobenzyl)propanoic acid (CAS 1260609-61-7)
- Fmoc-2,3-difluoro-L-homophenylalanine (CAS 1260609-44-6)
- (R)-3-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(3,5-difluorobenzyl)propanoic acid (CAS 1260609-68-4)
- 7-Fluoro-2,3-dimethylquinoxaline-5-carboxylic acid (CAS 1193388-35-0)
- 1-Phenyl-2-(quinazolin-4-ylthio)ethanone (CAS 31737-18-5)
- N-(5-bromopyridin-2-yl)pent-4-enamide (CAS 424803-12-3)
- Ethyl 2-[(5-chloro-2-methylphenyl)(methylsulfonyl)amino]butanoate (CAS 1858240-04-6)
- 2-(Bromomethyl)-6-chloro-3-(difluoromethyl)-5-hydroxypyridine (CAS 1805387-28-3)
- Lenalidomide Impurity 33 (CAS CATO-C4X-190333)
- 1-(2-(Benzylthio)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)ethan-1-one (CAS 1260664-67-2)
- Methyl 1,6-dimethyl-4-oxo-1,4-dihydropyridine-3-carboxylate (CAS 1820620-45-8)
- Estr-4-en-17b-ol (CAS 3646-30-8)
- Semaglutide impurity 85 (CAS CATO-C4X-222685)
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