3-Oxo-N,N-diphenylbutanamide CAS 2540-31-0
| CAS No. | 2540-31-0 |
| Molecular Formula | C16H15NO2 |
| Molecular Weight | 253.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Oxo-N,N-diphenylbutanamide (CAS 2540-31-0), molecular formula C16H15NO2 and molecular weight 253.30 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, 3-Oxo-N,N-diphenylbutanamide is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 253.30 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), 3-Oxo-N,N-diphenylbutanamide 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 | C16H15NO2 |
| Molecular Weight | 253.30 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Recommended Standards
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- 3-Phenyl-N-(2-(pyrimidin-5-yl)ethyl)acrylamide (CAS 2035017-97-9)
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- 1-Bromo-4-iodo-5-methoxy-2-(trifluoromethyl)benzene (CAS 2384872-75-5)
- 5-[(4-bromophenyl)methyl]-3-(chloromethyl)-1,2,4-oxadiazole (CAS 1152504-39-6)
- 6-Bromo-4-(trifluoromethyl)pyridine-2-sulfonyl chloride (CAS 1393582-18-7)
- 3,6-Dichloro-2-(difluoromethoxy)phenacyl bromide (CAS 1805125-43-2)
- Ethyl 5-(trifluoromethyl)picolinate (CAS 128072-94-6)
- 1-(2-Chloro-3,4-dimethoxyphenyl)prop-2-en-1-ol (CAS 1468503-28-7)
- Semaglutide Impurity 147 (CAS CATO-C4X-2226147)
Why CATO?
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