5-Hydroxyflavone CAS 491-78-1
| CAS No. | 491-78-1 |
| Molecular Formula | C15H10O3 |
| Molecular Weight | 238.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 5-Hydroxyflavone is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
5-Hydroxyflavone (CAS 491-78-1), molecular formula C15H10O3 and molecular weight 238.24 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C15H10O3, 5-Hydroxyflavone contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 238.24 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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), 5-Hydroxyflavone 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 | C15H10O3 |
| Molecular Weight | 238.24 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 1957 |
Related Hydroxyflavone Standards
Recommended Standards
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- 2-(4-Bromophenyl)-6-methyl-1,3,6,2-dioxazaborocane (CAS 115247-41-1)
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- 5-Amino-3-methyl-1-(3-(trifluoromethyl)phenyl)-1H-pyrazole-4-carbonitrile (CAS 1020057-94-6)
- Ethyl 2-(3,5-difluoro-2-methoxyphenyl)-2-oxoacetate (CAS 1256480-13-3)
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- 5-Chloro-3-ethyl-3-methyl-3,4-dihydro-2H-[1,3'-biquinolin]-2-one (CAS 918646-18-1)
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