2-(4-Chlorophenyl)butanoyl Chloride CAS 51631-64-2
| CAS No. | 51631-64-2 |
| Molecular Formula | C10H10Cl2O |
| Molecular Weight | 217.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 2-(4-Chlorophenyl)butanoyl Chloride (CAS 51631-64-2), a certified reference material (molecular formula C10H10Cl2O, MW 217.09 g/mol) for analytical method development and quality control.
Structurally, 2-(4-Chlorophenyl)butanoyl Chloride (C10H10Cl2O) contains a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 217.09 g/mol, it falls into the medium-molecular-weight range. 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).
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), 2-(4-Chlorophenyl)butanoyl Chloride 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 | C10H10Cl2O |
| Molecular Weight | 217.09 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
Related Chlorophenyl Standards
- 2-(4-Chlorophenyl)-2-methylpropanoyl chloride (CAS 40919-11-7)
- 1-(2-Chlorophenyl)-3-(methylthio)-1-propanol (CAS 1344243-04-4)
- 2-((2-Chlorophenyl)thio)-n'-hydroxyacetimidamide (CAS 1021085-82-4)
- 2-[(4-Chlorophenyl)sulfanyl]-N'-hydroxyethanimidamide (CAS 58818-93-2)
- 2-[(4-Chlorophenyl)thio]acetohydrazide (CAS 75150-40-2)
- 3-[(3-chlorophenyl)sulfanyl]propanoic acid (CAS 1132-52-1)
- Methyl 2-((4-chlorophenyl)thio)acetate (CAS 15446-15-8)
- 2-((4-Chlorophenyl)thio)propanoic acid (CAS 18527-12-3)
Recommended Standards
- 2’,4’-Dichlorobutyrophenone (CAS 66353-47-7)
- 1-Chloro-4-(4-chlorophenyl)butan-2-one (CAS 84523-62-6)
- 2-Bromopyridine-4-carbothioamide (CAS 4502-23-2)
- 1-(3,5-Dichlorophenyl)but-3-en-1-ol (CAS 842123-75-5)
- 3-((4-Amino-1H-pyrazol-1-yl)methyl)benzoic acid (CAS 1209267-81-1)
- (3-(Tetrahydrofuran-2-yl)isoxazol-5-yl)methanol (CAS 121604-49-7)
- 2-Chloro-6-(4-chlorophenyl)-4-methylnicotinonitrile (CAS 943115-07-9)
- 7-Tributylstannylchromen-2-one (CAS 2098953-30-9)
- 4-(1H-PYRAZOL-3-YL)PYRIDINE HCL (CAS 1189862-04-1)
- 3,4-Diiodo-1H-pyrrolo[2,3-b]pyridine (CAS 1352397-06-8)
- 10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one 25824-80-0 A818041 (CAS 25824-80-0)
- N-methoxy-N-methyl-2-(methylthio)nicotinamide (CAS 1208875-80-2)
- Adrenaline Impurity 25 (CAS CATO-C4X-184925)
- Semaglutide impurity 235 (CAS CATO-C4X-2226235)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com