2,3,9,10-Tetramethoxy-5H-isoquinolino[3,2-a]isoquinolin-8(6H)-one CAS 19716-59-7
| CAS No. | 19716-59-7 |
| Molecular Formula | C21H21NO5 |
| Molecular Weight | 367.40 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.
2,3,9,10-Tetramethoxy-5H-isoquinolino[3,2-a]isoquinolin-8(6H)-one (CAS 19716-59-7) is a high-purity analytical reference standard with the molecular formula C21H21NO5 and a molecular weight of 367.40 g/mol.
2,3,9,10-Tetramethoxy-5H-isoquinolino[3,2-a]isoquinolin-8(6H)-one (C21H21NO5) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. The carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO manufactures 2,3,9,10-Tetramethoxy-5H-isoquinolino[3,2-a]isoquinolin-8(6H)-one under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C21H21NO5 |
| Molecular Weight | 367.40 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Nitrogen Atoms | 1 |
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Recommended Standards
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- (2R,3R,4S,5R)-2-(6-Amino-2-(hexyloxy)-9H-purin-9-yl)-5-(hydroxymethyl)tetrahydrofuran-3,4-diol (CAS 50257-95-9)
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- 1-(2-Methoxybenzoyl)octahydro-1h-indole-2-carboxylic acid (CAS 1102871-76-0)
- D-[Ser]11-Semaglutide (CAS CATO-CPTD788629)
Why CATO?
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