Methyl 2-(3-methyl-6-oxo-4-(trifluoromethyl)isoxazolo[5,4-b]pyridin-7(6H)-yl)acetate CAS 1018047-44-3
| CAS No. | 1018047-44-3 |
| Molecular Formula | C11H9F3N2O4 |
| Molecular Weight | 290.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 290.20 g/mol gives Methyl 2-(3-methyl-6-oxo-4-(trifluoromethyl)isoxazolo[5,4-b]pyridin-7(6H)-yl)acetate distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
Methyl 2-(3-methyl-6-oxo-4-(trifluoromethyl)isoxazolo[5,4-b]pyridin-7(6H)-yl)acetate (CAS 1018047-44-3), molecular formula C11H9F3N2O4 and molecular weight 290.20 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Methyl 2-(3-methyl-6-oxo-4-(trifluoromethyl)isoxazolo[5,4-b]pyridin-7(6H)-yl)acetate (C11H9F3N2O4) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C11H9F3N2O4 |
| Molecular Weight | 290.20 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Recommended Standards
- O,O-Tepp (CAS 107-49-3)
- 5-Acetamido-2-(trifluoroacetamido)benzoic acid (CAS 1098397-49-9)
- Aripiprazole Impurity 71 (CAS CATO-C4X-100871)
- 1-(Difluorophenylmethyl)-2-fluoro-3-(trifluoromethyl)benzene (CAS 1138445-34-7)
- 3-Isopropyl-4-(trifluoromethyl)phenol (CAS 144847-03-0)
- 7-Bromo-6-chloro-2-methylquinazolin-4(1H)-one (CAS 1936326-34-9)
- 6-Acetyl-2-(3,5-dimethylphenyl)-1,2,4-triazine-3,5(2H,4H)-dione (CAS 478048-44-1)
- Glu17-Semaglutide (CAS CATO-C4X-2226209)
- 6-Chloro-4-(2-fluorophenyl)-2H-benzo[e][1,2,3]thiadiazine 1,1-dioxide (CAS 1031557-71-7)
- 3-(1h-Benzo[d]imidazol-2-yl)-2-cyclopropyl-2-methylpropanoic acid (CAS 923688-45-3)
- 1,4-Bis(5-phenylthiophen-2-yl)benzene (CAS 256342-39-9)
- N-(2-Ethoxyphenyl)-N-(methylsulfonyl)glycine (CAS 333454-66-3)
- 1-Methylnicotine Chloride (CAS 1005-24-9)
- Semaglutide impurity 74 (CAS CATO-C4X-222674)
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