6-(4-Fluorophenyl)-3-methylisoxazolo[5,4-b]pyridine-4-carbohydrazide CAS 938005-34-6
| CAS No. | 938005-34-6 |
| Molecular Formula | C14H11FN4O2 |
| Molecular Weight | 286.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
6-(4-Fluorophenyl)-3-methylisoxazolo[5,4-b]pyridine-4-carbohydrazide (CAS 938005-34-6) is a high-purity analytical reference standard with the molecular formula C14H11FN4O2 and a molecular weight of 286.26 g/mol.
Based on its molecular formula C14H11FN4O2, 6-(4-Fluorophenyl)-3-methylisoxazolo[5,4-b]pyridine-4-carbohydrazide contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 286.26 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
As a certified reference material (CRM), 6-(4-Fluorophenyl)-3-methylisoxazolo[5,4-b]pyridine-4-carbohydrazide 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 | C14H11FN4O2 |
| 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 | 4 |
Related Fluorophenyl 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)
- methyl 6-(4-fluorophenyl)-3-methylisoxazolo[5,4-b]pyridine-4-carboxylate (CAS 875424-64-9)
Recommended Standards
- 5-Fluoro-1-((3aR,4R,6R,6aR)-2,2,6-trimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)pyrimidine-2,4(1H,3H)-dione (CAS 66335-39-5)
- Allyl ((2-nitrophenyl)sulfonyl)carbamate (CAS 90916-29-3)
- Benzyl 2-(diethoxyphosphoryl)acetate (CAS 7396-44-3)
- 4-(1-Ethyl-3-methyl-1h-pyrazol-4-yl)-2-hydrazinyl-6-(trifluoromethyl)pyrimidine (CAS 925580-06-9)
- Pyrazolo[1,5-a]pyridine-3-carbonyl chloride (CAS 78933-24-1)
- (R)-2-(3-fluoro-4-methoxyphenyl)-2-(methylamino)ethan-1-ol (CAS 1335494-90-0)
- N-tert-Butylcarbamoyl-L-tert-leucine-d9 Benzyl Ester (CAS 1795786-80-9)
- 2-(Chloromethyl)-6-cyano-3-(difluoromethyl)pyridine-4-methanol (CAS 1807076-22-7)
- 4-(4-Nitrophenyl)-N-2-propen-1-yl-2-thiazolamine (CAS 5898-41-9)
- 2-(Piperazin-1-yl)pyridine-3-carboxylic acid (CAS 374063-94-2)
- 1,8-Bis(trichlorosilyl)octane mixed isomers (CAS 52217-53-5)
- 3,3,3-trifluoro-2-phenylpropan-1-amine hydrochloride (CAS 1803592-32-6)
- 2-(Difluoromethyl)-6-methoxy-5-nitropyridine-3-sulfonamide (CAS 1361819-82-0)
- Galanin Message Associated Peptide (44-59) amide (CAS 125455-59-6)
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