(2,4-Difluorophenyl)(3,5-difluorophenyl)methanone CAS 1096971-71-9
| CAS No. | 1096971-71-9 |
| Molecular Formula | C13H6F4O |
| Molecular Weight | 254.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(2,4-Difluorophenyl)(3,5-difluorophenyl)methanone (CAS 1096971-71-9) is a high-purity analytical reference standard with the molecular formula C13H6F4O and a molecular weight of 254.18 g/mol.
Structurally, (2,4-Difluorophenyl)(3,5-difluorophenyl)methanone (C13H6F4O) contains a hydroxyl group, an ether linkage, fluorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 254.18 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C13H6F4O |
| Molecular Weight | 254.18 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | F-containing |
Related Difluorophenyl Standards
- (2,4-Difluorophenyl)(3,4-difluorophenyl)methanone (CAS 1097034-16-6)
- Bis(3,5-difluorophenyl)methanone (CAS 139911-09-4)
- (3,4-Difluorophenyl)(3,5-difluorophenyl)methanone (CAS 746651-92-3)
- ethyl 5-(2,6-difluorophenyl)-1,3,4-oxadiazole-2-carboxylate (CAS 1707637-40-8)
- 3-(3-(2,6-Difluorophenyl)-1,2,4-oxadiazol-5-yl)propanoic acid (CAS 1708168-40-4)
- 3-(2,6-Difluorophenyl)-4,4,4-trifluorobutanoic acid (CAS 1272852-70-6)
- 3-(2,4-Difluorophenyl)-4,4,4-trifluorobutanoic acid (CAS 1369410-09-2)
- 3-(2,3-Difluorophenyl)-4,4,4-trifluorobutanoic acid (CAS 1409707-29-4)
Recommended Standards
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- 4,4-Difluoro-N-methylcyclohexanamine hydrochloride (CAS 1379258-01-1)
- Semaglutide impurity 86 (CAS CATO-C4X-152686)
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