(2S)-2-(((9H-fluoren-9-yl)methoxy)carbonyl)-5,5,5-trifluoro-4-methylpentanoic acid 777946-04-0 A13354 Fmoc-D,L-5,5,5-trifluoroleucine CAS 777946-04-0
| CAS No. | 777946-04-0 |
| Molecular Formula | C21H20F3NO4 |
| Molecular Weight | 407.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution, (2S)-2-(((9H-fluoren-9-yl)methoxy)carbonyl)-5,5,5-trifluoro-4-methylpentanoic acid 777946-04-0 A13354 Fmoc-D,L-5,5,5-trifluoroleucine is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 407.38 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).
(2S)-2-(((9H-fluoren-9-yl)methoxy)carbonyl)-5,5,5-trifluoro-4-methylpentanoic acid 777946-04-0 A13354 Fmoc-D,L-5,5,5-trifluoroleucine (CAS 777946-04-0), molecular formula C21H20F3NO4 and molecular weight 407.38 g/mol, is a CATO reference standard with documented purity and traceability.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), (2S)-2-(((9H-fluoren-9-yl)methoxy)carbonyl)-5,5,5-trifluoro-4-methylpentanoic acid 777946-04-0 A13354 Fmoc-D,L-5,5,5-trifluoroleucine 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.
Physical & Chemical Properties
| Molecular Formula | C21H20F3NO4 |
| Molecular Weight | 407.38 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
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