4,6-Dimethylisoxazolo[5,4-b]pyridin-3(2H)-one CAS 56366-97-3
| CAS No. | 56366-97-3 |
| Molecular Formula | C8H8N2O2 |
| Molecular Weight | 164.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,6-Dimethylisoxazolo[5,4-b]pyridin-3(2H)-one (CAS 56366-97-3) is a high-purity analytical reference standard with the molecular formula C8H8N2O2 and a molecular weight of 164.16 g/mol.
4,6-Dimethylisoxazolo[5,4-b]pyridin-3(2H)-one (C8H8N2O2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, 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 | C8H8N2O2 |
| Molecular Weight | 164.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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 |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 2 |
Related Dimethylisoxazolo Standards
- 5,6-Dimethylisoxazolo[4,3-c]pyridin-4(5H)-one (CAS 176683-51-5)
- 3,4-Dimethylisoxazolo[5,4-b]pyridin-6(7H)-one (CAS 19385-56-9)
- 3,6-Dimethylisoxazolo[5,4-b]pyridin-4-ol (CAS 19385-59-2)
- 4,6-Dimethylisoxazolo[3,4-b]pyridin-3(1H)-one (CAS 339365-49-0)
- N,3-Dimethylisoxazolo[5,4-d]pyrimidin-4-amine (CAS 68571-90-4)
- 4,6-Dimethylisoxazolo[3,4-b]pyridin-3-amine (CAS 670246-33-0)
- 4,6-Dimethylisoxazolo[5,4-b]pyridin-3-amine (CAS 916792-12-6)
- 5,7-Dimethylisoxazolo[3,4-c]pyridin-3(1H)-imine (CAS 95109-28-7)
Recommended Standards
- 4,7-Methanoisobenzofuran-1,3-dione, 3a,4,7,7a-tetrahydro-, homopolymer (CAS 55636-72-1)
- 4,6-Dimethoxynicotinonitrile (CAS 41935-72-2)
- 4-Amino-1-methyl-1,3-dihydro-2H-imidazo[4,5-c]pyridin-2-one (CAS 71703-04-3)
- 4,6-Diaminoisophthalaldehyde (CAS 22146-36-7)
- 8-propoxy-N-propylquinolin-4-amine (CAS 1275675-82-5)
- AUR1545 (CAS 3031593-79-7)
- Ethyl 2-benzylthiazole-4-carboxylate (CAS 83553-49-5)
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- (2S)-2-amino-4-(hydroxymethylphosphinyl)butanoyl-L-alanyl-L-alanine (2S)-2-amino-4-[hydroxy(methyl)phosphinoyl]butyryl-L-alanyl-L-alanine 2-Amino-4-(methylphosphino)butyrylalanylalanine 35597-43-4 Antibiotic SF 1293 Bialaphos CHEBI:3088 L-phosphinothricyl-L-alanyl-L-alanine N-{(2S)-2-amino-4-[hydroxy(methyl)phosphoryl]butanoyl}-L-alanyl-L-alanine PTT Phosphinothricylalanylalanine bilanafos gamma-(Hydroxymethylphosphinyl)-L-alpha-aminobutyryl-L-alanyl-L-alanine phosphinothricin tripeptide (CAS 35597-43-4)
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