Flucetorex CAS 40256-99-3
| CAS No. | 40256-99-3 |
| Molecular Formula | C20H21F3N2O3 |
| Molecular Weight | 394.39 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Flucetorex under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Flucetorex (CAS 40256-99-3), molecular formula C20H21F3N2O3 and molecular weight 394.39 g/mol, is a CATO reference standard with documented purity and traceability.
Flucetorex (C20H21F3N2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. It is notably hygroscopic, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C20H21F3N2O3 |
| Molecular Weight | 394.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- 5-Fluoro-1-((2R,3R,4R,5R)-4-hydroxy-5-(hydroxymethyl)-3-methoxytetrahydrofuran-2-yl)-4-(mesityloxy)pyrimidin-2(1H)-one (CAS 444788-89-0)
- Upadacitinib Impurity 133 (CAS CATO-C4X-2405133)
- 4-(Benzyloxy)-1,5-diphenyl-3-(trifluoromethyl)-1H-pyrazole (CAS 318951-47-2)
- Upadacitinib Impurity 134 (CAS CATO-C4X-2405134)
- (S)-11-Butyl-3,6,9-trioxo-1-phenyl-2-oxa-4,7,10-triazadodecan-12-oic acid (CAS 63623-60-9)
- 2-Chloro-N-(4-fluorobenzyl)-4-methylaniline (CAS 1040018-75-4)
- 4-Hydroxybenzophenone (CAS 1137-42-4)
- tert-Butyl 2-amino-4-oxo-3,5,7,8-tetrahydropyrido[4,3-d]pyrimidine-6(4H)-carboxylate (CAS 1000386-01-5)
- (2-(Trifluoromethyl)benzyl)hydrazine (CAS 627076-27-1)
- Methyl 5-Amino-2-fluoro-4-methoxybenzoate (CAS 1785259-87-1)
- 4-Cyano-2,5-difluorobenzyl methanesulfonate (CAS 433940-04-6)
- 4,4-Dimethylpentan-1-amine hydrochloride (CAS 1266694-57-8)
- n-(1h-Benzo[d]imidazol-2-yl)-2-(methylsulfonyl)propanamide (CAS 1280820-98-5)
- Semaglutide impurity 199 (CAS CATO-C4X-2226199)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com