(4-Chlorophenyl)(4-fluoro-3-nitrophenyl)methanone CAS 956474-49-0
| CAS No. | 956474-49-0 |
| Molecular Formula | C13H7ClFNO3 |
| Molecular Weight | 279.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(4-Chlorophenyl)(4-fluoro-3-nitrophenyl)methanone (CAS 956474-49-0), molecular formula C13H7ClFNO3 and molecular weight 279.65 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C13H7ClFNO3, (4-Chlorophenyl)(4-fluoro-3-nitrophenyl)methanone contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, fluorine/chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 279.65 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
As a certified reference material (CRM), (4-Chlorophenyl)(4-fluoro-3-nitrophenyl)methanone 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 | C13H7ClFNO3 |
| Molecular Weight | 279.65 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 1 |
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- 2-(5-(2-Chlorophenyl)furan-2-carboxamido)acetic acid (CAS 853330-43-5)
- Ethyl 3-(4-chlorophenyl)-5-hydroxy-1,2,4-triazine-6-carboxylate (CAS 36286-77-8)
- N-((4-chlorophenyl)carbamoyl)-2-(1H-1,2,4-triazol-1-yl)acetamide (CAS 339278-23-8)
- N-(2-Chlorophenyl)-6-hydroxy-1-methyl-2-oxo-1,2-dihydropyrimidine-4-carboxamide (CAS 338774-82-6)
- N-(3-Chlorophenyl)-6-hydroxy-1-methyl-2-oxo-1,2-dihydropyrimidine-4-carboxamide (CAS 338774-83-7)
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Recommended Standards
- (4-Chloro-3-nitrophenyl)(4-fluorophenyl)methanone (CAS 31431-16-0)
- 2-Chloro-5-(methylsulfonyl)-3-nitrobenzoic acid (CAS 2183910-38-3)
- methyl 4-(chlorosulfonyl)-2-nitrobenzoate (CAS 1909317-51-6)
- 3-(chlorosulfonyl)-4-methyl-5-nitrobenzoic acid (CAS 52317-26-7)
- 4-((1,4-Diazepan-1-yl)sulfonyl)morpholine (CAS 756457-63-3)
- (3-Fluoro-1H-pyrrolo[2,3-b]pyridin-4-yl)methanamine (CAS 1431960-35-8)
- (3AS,5aR,8aR,8bS)-2,2,7,7-tetramethyl-3a-((prop-2-yn-1-yloxy)methyl)tetrahydro-5H-bis([1,3]dioxolo)[4,5-b:4',5'-d]pyran (CAS 364733-08-4)
- Topiroxostat Impurity 78 (CAS CATO-C4X-105578)
- n-(4-Ethoxyphenyl)-2-(4-formyl-2-methoxyphenoxy)acetamide (CAS 247571-72-8)
- 2-Propenoic acid, 2-methyl-, octadecyl ester, polymer with 2-methylpropyl 2-propenoate (CAS 56486-59-0)
- N-hydroxy-4-methylbenzamide (CAS 2318-82-3)
- DMT-2'-OMe-Bz-C (CAS 110764-74-4)
- 2-[(diphenyl-4H-1,2,4-triazol-3-yl)sulfanyl]acetic acid (CAS 54559-45-4)
- Neuropeptide W-23 (human) (CAS 383415-79-0)
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