5-Methoxyisoquinoline-7,8-dione CAS 86433-70-7
| CAS No. | 86433-70-7 |
| Molecular Formula | C10H7NO3 |
| Molecular Weight | 189.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 5-Methoxyisoquinoline-7,8-dione 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.
CATO supplies 5-Methoxyisoquinoline-7,8-dione (CAS 86433-70-7), a certified reference material (molecular formula C10H7NO3, MW 189.17 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 5-Methoxyisoquinoline-7,8-dione is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 189.17 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
Physical & Chemical Properties
| Molecular Formula | C10H7NO3 |
| Molecular Weight | 189.17 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.) | 1981 |
| Nitrogen Atoms | 1 |
Related Methoxyisoquinoline Standards
- 7-Methoxyisoquinoline-5,8-dione (CAS 24011-04-9)
- 3-Methoxyisoquinoline-1-carbaldehyde (CAS 96246-10-5)
- 6-Methoxyisoquinoline-1-carbaldehyde (CAS 31181-33-6)
- 7-Methoxyisoquinoline-1-carbaldehyde (CAS 31181-37-0)
- 8-Methoxyisoquinoline-5-carbaldehyde (CAS 679434-44-7)
- 7-Methoxyisoquinoline-1,3(2H,4H)-dione (CAS 76746-94-6)
- 5-Methoxyisoquinoline-1(2H)-thione (CAS 1204296-52-5)
- 6-Methoxyisoquinoline-1-carbonitrile (CAS 1179148-80-1)
Recommended Standards
- 5-Hydroxyquinoline-3-carboxylic acid (CAS 911108-90-2)
- 5-nitroisoquinolin-1-amine (CAS 98410-86-7)
- 5-Hydroxyisoquinoline-1-carboxylic acid (CAS 90800-37-6)
- 5-Nitroquinolin-2-amine (CAS 611231-10-8)
- 3-(3-Formylphenoxy)propanoic acid (CAS 70170-90-0)
- 4-Cyclopropoxy-N-methyl-6-sulfamoylnicotinamide (CAS 1243380-09-7)
- (3S,7AR)-5-oxohexahydro-1H-pyrrolizine-3-carboxamide (CAS 134024-01-4)
- 5-Bromo-4-methoxy-2-methylpyridine (CAS 886372-61-8)
- tert-Butyl 3-(2,2,2-trifluoro-1-hydroxyethyl)azetidine-1-carboxylate (CAS 1628733-94-7)
- 5-Bromo-2,3-dimethoxyphenol (CAS 93828-11-6)
- 4-Chloro-N-[6-(trifluoromethyl)-[1,3]thiazolo[4,5-b]pyridin-2-yl]benzamide (CAS 1354448-65-9)
- tert-Butyl 4-methyl-1H-pyrrole-2-carboxylate (CAS 100780-41-4)
- 3-Formyl-4-(2-oxopiperidin-1-yl)benzonitrile (CAS 1260787-41-4)
- Semaglutide impurity 31 (CAS CATO-C4X-222631)
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