2-(3-Fluorophenyl)-5-[3-(4-fluorophenyl)-2,1-benzoxazol-5-yl]-5-methyl-1,2,4-triazolidin-3-one CAS 321433-44-7
| CAS No. | 321433-44-7 |
| Molecular Formula | C22H16F2N4O2 |
| Molecular Weight | 406.38 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(3-Fluorophenyl)-5-[3-(4-fluorophenyl)-2,1-benzoxazol-5-yl]-5-methyl-1,2,4-triazolidin-3-one (CAS 321433-44-7) is a high-purity analytical reference standard with the molecular formula C22H16F2N4O2 and a molecular weight of 406.38 g/mol.
2-(3-Fluorophenyl)-5-[3-(4-fluorophenyl)-2,1-benzoxazol-5-yl]-5-methyl-1,2,4-triazolidin-3-one (C22H16F2N4O2) 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C22H16F2N4O2 |
| Molecular Weight | 406.38 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 4 |
Related Fluorophenyl Standards
- 1-(4-(4-Fluorophenyl)piperazin-1-yl)-2-(2-(trifluoromethyl)-1H-benzo[d]imidazol-1-yl)ethan-1-one (CAS 383148-66-1)
- 2-(2-Fluorophenyl)-5-[3-(4-fluorophenyl)-2,1-benzoxazol-5-yl]-5-methyl-1,2,4-triazolidin-3-one (CAS 321433-43-6)
- (5-((4-Fluorophenyl)sulfonyl)-1-methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)methyl cyclopropanecarboxylate (CAS 956193-71-8)
- 1-Benzyl-3-(2-((3-(4-fluorophenyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)oxy)ethyl)urea (CAS 1020976-71-9)
- Ethyl 1-(5-((3-fluorophenyl)carbamoyl)-1,3,4-thiadiazole-2-carbonyl)piperidine-4-carboxylate (CAS 1142210-66-9)
- N1-((1-((4-Fluorophenyl)carbamoyl)piperidin-4-yl)methyl)-N2-((tetrahydrofuran-2-yl)methyl)oxalamide (CAS 1286706-41-9)
- 7-(4-Fluorophenyl)-2-(4-phenylpiperazin-1-yl)thieno[3,2-d]pyrimidin-4(1H)-one (CAS 1242931-70-9)
- 3-(4-Fluorophenyl)-5-(morpholin-4-yl)-7-(phenylamino)-1,4-thiazepine-6-carbonitrile (CAS 338401-15-3)
Recommended Standards
- 3-Chloro-2-(3,5-dibromo-1H-1,2,4-triazol-1-yl)-5-(trifluoromethyl)pyridine (CAS 320424-27-9)
- 3-Iodo-6,6-dimethyl-1-((2-(trimethylsilyl)ethoxy)methyl)-4,5,6,7-tetrahydro-1H-indazole (CAS 2792119-49-2)
- (S)-Naproxen Iso-acyl-β-D-glucuronide (CAS 219476-92-3)
- 5-Hydroxybenzo[b]phosphindole 5-oxide (CAS 524-49-2)
- Methyl 2,2-difluorohexanoate (CAS 50889-47-9)
- 1706436-07-8 Methyl (2S)-3-{1-[(benzyloxy)carbonyl]piperidin-4-yl}-4-oxo-1,3-oxazolidine-2-carboxylate (CAS 1706436-07-8)
- 3-(Tert-butylsulfanyl)propan-1-ol (CAS 5755-56-6)
- 23996-25-0 3-(2-Ethyl-4-methyl-1-imidazolyl)propionitrile (contains 5-methyl isomer) MFCD00051492 1H-Imidazole-1-propanenitrile, 2-ethyl-4-methyl- 1-(2-Cyanoethyl)-2-ethyl-4-methylimidazole 1-Cyanoethyl-2-ethyl-4-methylimidazole (CAS 23996-25-0)
- Tert-butyl 4-[(oxazol-4-ylmethylamino)methyl]azepane-1-carboxylate (CAS 2297763-05-2)
- 4-Methyl-3-[(4-methylpyridin-2-yl)oxy]aniline (CAS 1249485-96-8)
- 2-Methyl-6-(methylsulfonyl)-4-nitro-1H-benzo[d]imidazole (CAS 91224-49-6)
- 5-(Ethoxycarbonyl)pyridine-3-boronic acid (CAS 875781-62-7)
- 3-Methyloxetan-3-yl (4-nitrophenyl) carbonate (CAS 1453272-56-4)
- Acetyl Tetrapeptide-5 (CAS 820959-17-9)
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