methyl 6-(4-fluorophenyl)-3-methylisoxazolo[5,4-b]pyridine-4-carboxylate CAS 875424-64-9
| CAS No. | 875424-64-9 |
| Molecular Formula | C15H11FN2O3 |
| Molecular Weight | 286.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
methyl 6-(4-fluorophenyl)-3-methylisoxazolo[5,4-b]pyridine-4-carboxylate (CAS 875424-64-9) is a high-purity analytical reference standard with the molecular formula C15H11FN2O3 and a molecular weight of 286.26 g/mol.
methyl 6-(4-fluorophenyl)-3-methylisoxazolo[5,4-b]pyridine-4-carboxylate (C15H11FN2O3) contains a nitrogen-containing heterocyclic scaffold, 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. 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.
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 | C15H11FN2O3 |
| Molecular Weight | 286.26 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related methyl Standards
- 3-[7-(4-fluorophenyl)[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]propanoic acid (CAS 1018052-29-3)
- N-((5-(2-Fluorophenyl)isoxazol-3-yl)methyl)furan-2-carboxamide (CAS 1040638-36-5)
- 2-(4-Fluorophenyl)-5-methoxypyrazolo[1,5-a]pyridine-3-carboxylic acid (CAS 1215106-29-8)
- 2-(4-Fluorophenyl)-2-(7-oxo-5,7-dihydro-6H-pyrrolo[3,4-b]pyridin-6-yl)acetic acid (CAS 1218657-27-2)
- 1-(4-Fluorophenyl)-5-(1H-pyrrol-1-yl)-1H-1,2,3-triazole-4-carbohydrazide (CAS 1325303-57-8)
- 2-(4-Fluorophenyl)-7-methoxypyrazolo[1,5-a]pyridine-3-carboxylic acid (CAS 1956326-69-4)
- 5-{4-[(4-fluorophenyl)methoxy]phenyl}-2,3-dihydro-1,3,4-oxadiazol-2-one (CAS 866009-87-2)
- 6-(4-Fluorophenyl)-3-methylisoxazolo[5,4-b]pyridine-4-carbohydrazide (CAS 938005-34-6)
Recommended Standards
- Methyl 5-cyano-6-(4-fluorophenoxy)-2-methylnicotinate (CAS 303146-31-8)
- N-(5-Fluoro-7-nitro-9H-fluoren-2-yl)acetamide (CAS 2969-73-5)
- Methyl 3-((diethoxyphosphoryl)methyl)benzoate (CAS 96534-02-0)
- N-[(3-Oxo-3,4-dihydro-2H-1,4-benzoxazin-6-yl)sulfonyl]glycine (CAS 874801-32-8)
- Ethyl 6-chloro-4-hydroxyquinoline-3-carboxylate (CAS 70271-77-1)
- 2-(Ethylsulfanyl)propanenitrile (CAS 36705-63-2)
- Segetalin A (CAS 161875-97-4)
- (E)-2-phenyl-4-(((4-(thiophen-2-yl)pyrimidin-2-yl)amino)methylene)oxazol-5(4H)-one (CAS 865660-34-0)
- N,N-Diethyl-5,6,7,8-tetrahydroimidazo[1,2-a]pyrazine-8-carboxamide (CAS 1706431-67-5)
- 2-Bromo-6-(difluoromethyl)-3-fluoro-5-nitropyridine (CAS 1804635-21-9)
- 4-Fluoro-2,1,3-benzothiadiazole (CAS 134963-05-6)
- (2,6-Difluorophenyl)(4-(6-(pyridin-4-ylamino)pyridazin-3-yl)piperazin-1-yl)methanone (CAS 1020978-57-7)
- 2-Chloro-N-ethyl-N-phenylisonicotinamide (CAS 1019383-76-6)
- Semaglutide Impurity 140 (CAS CATO-C4X-2226140)
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