4-hydroxy-5,7-dimethoxy-2H-chromen-2-one CAS 2555-38-6
| CAS No. | 2555-38-6 |
| Molecular Formula | C11H10O5 |
| Molecular Weight | 222.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-hydroxy-5,7-dimethoxy-2H-chromen-2-one (CAS 2555-38-6), a certified reference material (molecular formula C11H10O5, MW 222.19 g/mol) for analytical method development and quality control.
The molecular framework of 4-hydroxy-5,7-dimethoxy-2H-chromen-2-one (C11H10O5) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C11H10O5 |
| Molecular Weight | 222.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related hydroxy Standards
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- 2-(1-Methyl-3-(trifluoromethyl)-1H-pyrazol-4-yl)-5-phenyl-1,3,4-oxadiazole (CAS 477762-35-9)
- 1-(Isobutylthio)pyrrolidine-2,5-dione (CAS 92526-43-7)
- 4-(4-Fluorobenzenesulfonyl)-2-(4-fluorophenyl)-5-(propane-1-sulfonyl)-1,3-oxazole (CAS 891021-50-4)
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- Insulin Degludec Impurity 3 (CAS CATO-C4X-21573)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com