1-Methoxy-4-(3,4,5-trimethoxyphenyl)isoquinolin-5-ol CAS 656233-94-2
| CAS No. | 656233-94-2 |
| Molecular Formula | C19H19NO5 |
| Molecular Weight | 341.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Methoxy-4-(3,4,5-trimethoxyphenyl)isoquinolin-5-ol (CAS 656233-94-2) is a high-purity analytical reference standard with the molecular formula C19H19NO5 and a molecular weight of 341.36 g/mol.
1-Methoxy-4-(3,4,5-trimethoxyphenyl)isoquinolin-5-ol (C19H19NO5) 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. 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.
As a certified reference material (CRM), 1-Methoxy-4-(3,4,5-trimethoxyphenyl)isoquinolin-5-ol 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 | C19H19NO5 |
| Molecular Weight | 341.36 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
| Nitrogen Atoms | 1 |
Related Methoxy Standards
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Recommended Standards
- 1-Amino-2,4-bis((2-hydroxyethyl)amino)anthracene-9,10-dione (CAS 919747-77-6)
- 2-((3-((Tetrahydrofuran-2-yl)methoxy)phenyl)carbamoyl)benzoic acid (CAS 909366-62-7)
- 1,3-Diphenyl-5-(pyridin-3-yloxy)-1H-pyrazole-4-carbaldehyde (CAS 956360-82-0)
- 2-((4-Amino-2,5-dimethoxyphenyl)-sulfonyl)ethyl hydrogen sulfate (CAS 26672-24-2)
- 2-Bromo-1-[(4-methoxyphenyl)methoxy]-4-methylbenzene (CAS 1036593-47-1)
- N-(2,3-Dichlorophenyl)-2-((4-phenyl-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)acetamide (CAS 332376-22-4)
- 7,8-Dihydroxyflavone (CAS 38183-03-8)
- (R)-1-(4-(4-methylthiazol-5-yl)phenyl)ethan-1-amine (CAS 2418594-41-7)
- 2-[4-(Trifluoromethyl)furan-2-yl]acetic acid (CAS 1504300-33-7)
- 3-Oxo-6-(2-phenylpyrazolo[1,5-a]pyridin-3-yl)-2,3-dihydropyridazine-4-carboxylic acid (CAS 195826-99-4)
- 5,8-Dimethyl-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (CAS 641993-15-9)
- 2-Methoxy-N-(1-(o-tolyl)ethyl)acetamide (CAS 1223645-68-8)
- 1-(3-(Azepan-1-yl)pyrazin-2-yl)-1H-pyrazole-3-carboxylic acid (CAS 1708080-79-8)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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