1,2,3,6,7-Pentamethoxy-9H-xanthen-9-one CAS 64756-86-1
| CAS No. | 64756-86-1 |
| Molecular Formula | C18H18O7 |
| Molecular Weight | 346.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 346.33 g/mol gives 1,2,3,6,7-Pentamethoxy-9H-xanthen-9-one distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
1,2,3,6,7-Pentamethoxy-9H-xanthen-9-one (CAS 64756-86-1) is a high-purity analytical reference standard with the molecular formula C18H18O7 and a molecular weight of 346.33 g/mol.
1,2,3,6,7-Pentamethoxy-9H-xanthen-9-one (C18H18O7) contains a flavonoid core, 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).
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), 1,2,3,6,7-Pentamethoxy-9H-xanthen-9-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 | C18H18O7 |
| Molecular Weight | 346.33 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
Related Pentamethoxy Standards
Recommended Standards
- 1-((2R,4aR,7R,8S,8aS)-8-Hydroxy-2-phenylhexahydropyrano[3,2-d][1,3]dioxin-7-yl)pyrimidine-2,4(1H,3H)-dione (CAS 401906-98-7)
- 1,3-Dihydro-1,3-dioxo-2H-isoindol-2-yl 1-[[(1,1-dimethylethoxy)carbonyl]amino]cyclopropanecarboxylate (CAS 2240185-66-2)
- (S)-N-(3-Methyl-1-(phenylselanyl)butan-2-yl)benzamide (CAS 869383-47-1)
- 1-{1-[(tert-butoxy)carbonyl]piperidin-4-yl}-5-(difluoromethyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 2044713-17-7)
- 2-(4-((tert-Butoxycarbonyl)amino)piperidin-1-yl)acetic acid (CAS 299203-94-4)
- 2-Amino-3-methylbutanethioamide (CAS 111013-83-3)
- 5-Fluoro-4-methoxypicolinaldehyde (CAS 1256835-58-1)
- 4-(4-Heptyloxyphenyl)-4-oxobutyric acid (CAS 143134-89-8)
- Ethyl 4-amino-1-(fluoromethyl)cyclohexane-1-carboxylate (CAS 2387595-35-7)
- 1-(5-Amino-2-methylphenyl)piperidin-2-one (CAS 941868-25-3)
- 3-Oxo-7-(trifluoromethyl)-3,4-dihydroquinoxaline-2-carboxylic acid (CAS 219485-21-9)
- 2-(4-((2-Chloro-6-fluorobenzyl)oxy)phenyl)acetonitrile (CAS 175135-35-0)
- 4-(Difluoromethyl)-1H-indole-2-carboxylic acid (CAS 2167142-20-1)
- Tirzepatide Impurity 15 (CAS CATO-C4X-324015)
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