5-Hydroxy-6,7-dimethoxy-2-phenyl-4H-chromen-4-one CAS 740-33-0
Purity >95%In StockPharmaceutical Standards
| CAS No. | 740-33-0 |
| Molecular Formula | C17H14O5 |
| Molecular Weight | 298.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Hydroxy-6,7-dimethoxy-2-phenyl-4H-chromen-4-one (CAS 740-33-0) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C17H14O5. Molecular weight: 298.29 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C17H14O5 |
| Molecular Weight | 298.29 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 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.) | 1957 |
Related Hydroxy Standards
- 3-Hydroxy-7-methoxy-2-(4-methoxyphenyl)-4H-chromen-4-one (CAS 13198-99-7)
- 7-Hydroxy-5-methoxy-2-(4-methoxyphenyl)-4H-chromen-4-one (CAS 13698-23-2)
- 1-Hydroxy-5,8-dimethoxy-3-methylanthracene-9,10-dione (CAS 76696-04-3)
- 5-Hydroxy-3,7-dimethoxy-2-phenyl-4H-chromen-4-one (CAS 70786-48-0)
- 6-Hydroxy-7-methoxy-3-(4-methoxyphenyl)-4H-chromen-4-one (CAS 970-48-9)
- 7-Hydroxy-3-(4-methoxyphenoxy)-2-methyl-4h-chromen-4-one (CAS 297148-24-4)
- 8-Hydroxy-1,2-dimethoxy-3-methylanthracene-9,10-dione (CAS 82868-99-3)
- 4-Hydroxy-1-naphthyl-1'-naphthyl ketone (CAS 432049-53-1)
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