3-(3,5-Difluorophenyl)-7-hydroxy-2H-chromen-2-one CAS 951957-81-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 951957-81-6 |
| Molecular Formula | C15H8F2O3 |
| Molecular Weight | 274.22 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-(3,5-Difluorophenyl)-7-hydroxy-2H-chromen-2-one (CAS 951957-81-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C15H8F2O3. Molecular weight: 274.22 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C15H8F2O3 |
| Molecular Weight | 274.22 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F-containing |
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- 2-((2,4-Difluorophenyl)amino)-4H-benzo[d][1,3]oxazin-4-one (CAS 477854-01-6)
- 2-(3,4-Difluorophenyl)-1H-benzimidazole-6-carboxylic acid (CAS 870115-12-1)
- 3-(3-(2,6-Difluorophenyl)-1,2,4-oxadiazol-5-yl)pyridin-2-amine (CAS 1708168-88-0)
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Recommended Standards
- 3-(((2S,3R,4S,5S,6R)-3,4,5-Trihydroxy-6-(hydroxymethyl)-tetrahydro-2H-pyran-2-yl)oxy)-4H-pyran-4-one (CAS 59219-76-0)
- 3-(5,6-Difluorobenzofuran-2-yl)benzoic acid (CAS 835595-08-9)
- 2-(Acetoxymethyl)-5-oxotetrahydrofuran-3,4-diyl diacetate (CAS 394739-29-8)
- 1-Ethyl-2-(hydroxymethyl)-4-tosylpiperazine-2-carbonitrile (CAS 2201785-68-2)
- 2-(4-hydroxyphenyl)propanedial (CAS 554453-78-0)
- 6-Fluoro-2-piperazin-1-yl-benzooxazole (CAS 1246609-07-3)
- 5-(2-Cyanopropan-2-yl)nicotinic acid (CAS 878742-36-0)
- Dibenzo[a,i]pyrene[5,8]quinone (CAS 3302-52-1)
- Difluprednate Impurity 3 (CAS 1234557-20-0)
- Tirzepatide Impurity 46 (CAS CATO-C4X-324046)
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