Butyl 4-(4-chlorophenyl)-4-oxobutanoate CAS 340283-98-9
| CAS No. | 340283-98-9 |
| Molecular Formula | C14H17ClO3 |
| Molecular Weight | 268.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Butyl 4-(4-chlorophenyl)-4-oxobutanoate (CAS 340283-98-9), molecular formula C14H17ClO3 and molecular weight 268.74 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C14H17ClO3, Butyl 4-(4-chlorophenyl)-4-oxobutanoate contains a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 268.74 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Butyl 4-(4-chlorophenyl)-4-oxobutanoate 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 | C14H17ClO3 |
| Molecular Weight | 268.74 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Cl-containing |
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Recommended Standards
- Bupropion Impurity 03 (CAS 2763780-10-3)
- Clomifenecitrate (CAS 88431-47-4)
- 8-(4-Chlorophenyl)-8-oxooctanoic acid (CAS 35333-22-3)
- Ethyl 5-(3-chloro-4-methylphenyl)-5-oxopentanoate (CAS 951890-24-7)
- 1,2,3,4-Tetrahydro-4,8-dihydroxy-2-methylisoquinoline Hydrochloride (CAS 2514676-44-7)
- 3-(Isoxazol-3-yl)-1,1-dimethylurea (CAS 55807-89-1)
- Ethyl 3-bromo-3-cyclopropyl-2-oxopropanoate (CAS 527385-25-7)
- 6-Chloro-4-hydroxy-1-methyl-1,7-naphthyridin-2(1H)-one (CAS 1935435-26-9)
- 3-(Bromomethyl)-3-butyltetrahydro-2h-pyran (CAS 1698390-53-2)
- 4-(Pyridin-2-yl)tetrahydro-2H-thiopyran-4-carbonitrile (CAS 2177266-50-9)
- Cefpirome Impurity 43 (CAS CATO-C4X-120743)
- 1-Methyl-5-(phenylcarbamoyl)-1H-pyrazole-4-carboxylic acid (CAS 1052627-11-8)
- (E)-3-chloro-2-(2-(4-chlorobenzylidene)hydrazinyl)-5-(trifluoromethyl)pyridine (CAS 338795-09-8)
- Semaglutide impurity 260 (CAS CATO-C4X-2226260)
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