3,5-Difluoro-3-(4-methylphenyl)propiophenone CAS 898769-40-9
| CAS No. | 898769-40-9 |
| Molecular Formula | C16H14F2O |
| Molecular Weight | 260.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3,5-Difluoro-3-(4-methylphenyl)propiophenone.
3,5-Difluoro-3-(4-methylphenyl)propiophenone (CAS 898769-40-9), molecular formula C16H14F2O and molecular weight 260.28 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 3,5-Difluoro-3-(4-methylphenyl)propiophenone (C16H14F2O) contains a hydroxyl group, an ether linkage, fluorine substitution, a polycyclic aromatic 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 260.28 g/mol, it falls into the medium-molecular-weight range. 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.
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 | C16H14F2O |
| Molecular Weight | 260.28 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.) | 1987 |
| Halogen Content | F-containing |
Related Difluoro Standards
- 2,4-Difluoro-3-(4-methylphenyl)propiophenone (CAS 898769-34-1)
- 3,4-Difluoro-4-isopropylbenzophenone (CAS 845781-00-2)
- 3,4-Difluoro-4-n-propylbenzophenone (CAS 845781-03-5)
- 3,5-Difluoro-3-(3-methylphenyl)propiophenone (CAS 898768-21-3)
- 3,5-Difluoro-4-isopropylbenzophenone (CAS 844885-09-2)
- 3,5-Difluoro-4'-methylbenzophenone (CAS 844885-12-7)
- 3,5-Difluoro-4-((2-(methylsulfonyl)ethyl)amino)benzonitrile (CAS 1384711-06-1)
- 5,6-Difluoro-2-(2-methoxyphenyl)-1H-benzo[d]imidazole (CAS 1266751-87-4)
Recommended Standards
- 4-(tert-Butyl)-2-mercapto-6-(trifluoromethyl)nicotinonitrile (CAS 860790-41-6)
- 3-(Difluoromethyl)-N-(thiophen-3-yl)isothiazole-4-carboxamide (CAS 616204-55-8)
- 8-Acetamidooctadecanoic acid (CAS 6622-46-4)
- 3-(2,5-Difluorophenyl)-6,7,8,9-tetrahydro-5H-cyclohepta[c]pyridazine (CAS 918873-78-6)
- 610-15-1 Benzamide, o-nitro- Benzamide, 2-nitro- (9CI) 2-Nitrobenzamide Benzamide, 2-nitro- 4-09-00-01049 (Beilstein Handbook Reference) BRN 1950928 2-Carbamoylnitrobenzene EINECS 210-208-5 o-Nitrobenzamide NSC 407995 (CAS 610-15-1)
- N2-(((9H-Fluoren-9-yl)methoxy)carbonyl)-N6-trityl-L-lysine (CAS 111061-54-2)
- 6-Methoxy-3-(methoxycarbonyl)-2-(4-nitrophenyl)-4H-benzopyran-4-one (CAS 132018-13-4)
- N-(2-Acetylphenyl)-3,4-dichlorobenzene-1-sulfonamide (CAS 303152-41-2)
- 1,2,4-Oxadiazol-5-amine (CAS 72212-97-6)
- 5-(Chloromethyl)-1-methyl-2-nitroimidazole (CAS 87544-76-1)
- 7-Bromo-1-methoxyisoquinoline (CAS 1374258-30-6)
- Ethyl 5-Hydroxy-4-methoxy-2-nitrobenzoate (CAS 1146162-38-0)
- (S)-(3-methyl-2-oxooxazolidin-4-yl)methyl 4-methylbenzenesulfonate (CAS 245107-02-2)
- Semaglutide impurity 255 (CAS CATO-C4X-2226255)
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