3-methyl-5,6-dihydro-8H-isoxazolo[5,4-b]pyrano[4,3-e]pyridin-8-one CAS 1000933-01-6
| CAS No. | 1000933-01-6 |
| Molecular Formula | C10H8N2O3 |
| Molecular Weight | 204.18 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.
CATO supplies 3-methyl-5,6-dihydro-8H-isoxazolo[5,4-b]pyrano[4,3-e]pyridin-8-one (CAS 1000933-01-6), a certified reference material (molecular formula C10H8N2O3, MW 204.18 g/mol) for analytical method development and quality control.
The molecular framework of 3-methyl-5,6-dihydro-8H-isoxazolo[5,4-b]pyrano[4,3-e]pyridin-8-one (C10H8N2O3) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
As a certified reference material (CRM), 3-methyl-5,6-dihydro-8H-isoxazolo[5,4-b]pyrano[4,3-e]pyridin-8-one 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 | C10H8N2O3 |
| Molecular Weight | 204.18 g/mol |
| Appearance | Pale yellow to 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 methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 2 |
Related methyl Standards
- 4-(2-oxo-2,3-dihydro-1H-imidazol-1-yl)benzoic acid (CAS 1554083-04-3)
- 2-(4-Oxo-4,5-dihydro-1H-imidazol-2-yl)benzoic acid (CAS 92449-03-1)
- 2-Oxo-2,3-dihydro-quinazoline-8-carboxylic acid methyl ester (CAS 2306273-30-1)
- 3-(2-oxo-2,3-dihydro-1H-imidazol-1-yl)benzoic acid (CAS 939999-26-5)
- 4-(5-Oxo-4,5-dihydro-1H-pyrazol-1-yl)benzoic acid (CAS 916169-50-1)
- 7,8-Dihydro-[1,4]dioxino[2,3-g]quinazolin-4(3H)-one (CAS 52791-04-5)
- Methyl 3,4-dihydro-3-oxo-6-quinoxalinecarboxylate (CAS 357637-38-8)
- 3-(3,6-Dihydro-2h-pyran-4-yl)benzoic acid (CAS 1000016-95-4)
Recommended Standards
- Methyl 4-oxo-3,4-dihydroquinazoline-8-carboxylate (CAS 1000578-10-8)
- 2-[3-(difluoromethyl)-5-methyl-1h-pyrazol-1-yl]acetohydrazide (CAS 1001518-82-6)
- Fluconazole Impurity 7 (CAS 173837-65-5)
- 4-hydroxy-1-phenyl-1H-pyrazole-3-carboxylic acid (CAS 1006492-88-1)
- tert-butyl 3-hydroxy-3-propyl-azetidine-1-carboxylate (CAS 398489-36-6)
- (4-Amino-2,3,5,6-tetrafluorophenyl)methanol (CAS 17078-34-1)
- 3-Bromo-5-(bromomethyl)-2-methoxypyridine (CAS 1219936-53-4)
- 4-((4-Chloropyridin-3-yl)sulfonyl)morpholine (CAS 59582-95-5)
- H-Cys(StBu)-OH (CAS 30044-51-0)
- 3-([1,1'-Biphenyl]-4-yl)-4-hydroxy-6-oxo-6,7-dihydrothieno[2,3-b]pyridine-5-carbonitrile (CAS 844499-68-9)
- 2-(4-Chloro-3,5-dimethylphenoxy)-5-fluoroaniline (CAS 946717-01-7)
- Articaine Impurity 16 (CAS CATO-C4X-191216)
- 3-(Heptylamino)-N-methylpropanamide (CAS 1040690-26-3)
- Liraglutide Impurity 25 (CAS CATO-C4X-199225)
Why CATO?
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