4'-Chlorobiphenyl-4-sulfonyl chloride CAS 20443-74-7
| CAS No. | 20443-74-7 |
| Molecular Formula | C12H8Cl2O2S |
| Molecular Weight | 287.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4'-Chlorobiphenyl-4-sulfonyl 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.
4'-Chlorobiphenyl-4-sulfonyl chloride (CAS 20443-74-7) is a high-purity analytical reference standard with the molecular formula C12H8Cl2O2S and a molecular weight of 287.16 g/mol.
Structurally, 4'-Chlorobiphenyl-4-sulfonyl chloride (C12H8Cl2O2S) contains a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 287.16 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C12H8Cl2O2S |
| Molecular Weight | 287.16 g/mol |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | Cl-containing |
| Sulfur Atoms | 1 |
Related Chlorobiphenyl Standards
- 4’-Chlorobiphenyl-4-acetic Acid (CAS 5525-72-4)
- 4’-Chlorobiphenyl-3-carboxylic Acid (CAS 4655-10-1)
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Recommended Standards
- 4'-Chloro-[1,1'-biphenyl]-3-sulfonyl chloride (CAS 501697-62-7)
- 5-Methoxy-2-methyl-7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-indole (CAS 919119-61-2)
- 4'-Chloro-[1,1'-biphenyl]-2-sulfonylchloride (CAS 887344-37-8)
- 8-Methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydroquinolin-2(1H)-one (CAS 2304633-96-1)
- 2-Amino-5,6-dihydrobenzo[h]quinazolin-4(3H)-one (CAS 7223-85-0)
- Ethyl 3-methoxy-4-nitrobenzoate (CAS 10259-23-1)
- tert-butyl 2-cyano-3,3-bis(ethylsulfanyl)prop-2-enoate (CAS 1955523-62-2)
- Baricitinib Impurity 111 (CAS CATO-C4X-2260111)
- Levosimendan Impurity 37 (CAS 103416-88-2)
- Methyl 3-{[(2,7-dimethylpyrazolo[1,5-a]pyrimidin-6-yl)carbonyl]amino}-2-thiophenecarboxylate (CAS 691868-60-7)
- 5,7-Difluoroquinazolin-2-amine (CAS 1823913-89-8)
- 4-((4-hydroxypiperidin-1-yl)methyl)-N,N-dimethylbenzenesulfonamide (CAS 1185318-35-7)
- 1,1-(1,4-Phenylene)diadamantane (CAS 10509-15-6)
- Thymopoietin II Peptide Fragment (CAS 56795-64-3)
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