2-(4-Chlorobenzoyl)benzoyl chloride CAS 42156-76-3
| CAS No. | 42156-76-3 |
| Molecular Formula | C14H8Cl2O2 |
| Molecular Weight | 279.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 2-(4-Chlorobenzoyl)benzoyl chloride under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
2-(4-Chlorobenzoyl)benzoyl chloride (CAS 42156-76-3) is a high-purity analytical reference standard with the molecular formula C14H8Cl2O2 and a molecular weight of 279.12 g/mol.
Owing to a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, a polycyclic aromatic system, 2-(4-Chlorobenzoyl)benzoyl chloride is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 279.12 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C14H8Cl2O2 |
| Molecular Weight | 279.12 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 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; 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.) | 1969 |
| Halogen Content | Cl-containing |
Related Chlorobenzoyl Standards
- Ethyl 4-(3-chlorobenzoyl)isoxazole-3-carboxylate (CAS 338761-68-5)
- Ethyl 4-(4-chlorobenzoyl)isoxazole-3-carboxylate (CAS 952182-77-3)
- 3-(3-Chlorobenzoyl)quinoline (CAS 1178743-28-6)
- 3-(3-chlorobenzoyl)-4H,5H,6H-cyclopenta[b]thiophen-2-amine (CAS 399043-34-6)
- 3-(4-Chlorobenzoyl)-4h,5h,6h-cyclopenta[b]thiophen-2-amine (CAS 304018-04-0)
- 5-(2-Chlorobenzoyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine (CAS 68559-48-8)
- 1-(4-Chlorobenzoyl)-N-methyl-4-nitro-1H-pyrazol-3-amine (CAS 318517-38-3)
- 2-(5-(4-Chlorobenzoyl)thiophen-2-yl)acetic acid (CAS 33061-80-2)
Recommended Standards
- 2-(3,4-Dichlorophenyl)benzo[d]oxazol-6-amine (CAS 879074-65-4)
- 2-{[(2,4-dichlorophenyl)methyl]amino}pyrimidine-5-carbonitrile (CAS 400084-62-0)
- 2-(3,4-Dichlorophenyl)benzo[d]oxazol-5-amine (CAS 293737-85-6)
- 2-Chloro-5-(5-chloro-1,3-benzoxazol-2-yl)aniline (CAS 443290-23-1)
- Triethyl 3-cyanopentane-1,3,5-tricarboxylate (CAS 58774-06-4)
- 11-Deoxy Corticosterone-d8 (CAS 55487-63-3)
- Sulfacetamide Sodium EP Impurity C (CAS 5626-90-4)
- 4-(2-Methoxyethyl)-4H-1,2,4-triazole-3-carbaldehyde (CAS 2137795-79-8)
- Terbutaline Impurity 15 (CAS 3886-19-9)
- (2,3-Difluoro-1,4-phenylene)bis(methylsulfane) (CAS 2390118-75-7)
- N-(2,4-dimethoxyphenyl)-2-((3-methyl-4-oxo-7-(p-tolyl)-3,4-dihydrothieno[3,2-d]pyrimidin-2-yl)thio)acetamide (CAS 1040631-78-4)
- (1-(4-Ethoxyphenyl)cyclohexyl)methanamine (CAS 1038719-62-8)
- 8-Hydroxy-6-methyl-2,3-dihydrocyclopenta[b]chromene-1,9-dione (CAS 168434-88-6)
- [3-31]-Semaglutide D (CAS C152H230N42O47)
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