4,7-Dichloro-2,8-dimethylquinoline CAS 21728-15-4
| CAS No. | 21728-15-4 |
| Molecular Formula | C11H9Cl2N |
| Molecular Weight | 226.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures 4,7-Dichloro-2,8-dimethylquinoline 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.
4,7-Dichloro-2,8-dimethylquinoline (CAS 21728-15-4), molecular formula C11H9Cl2N and molecular weight 226.10 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4,7-Dichloro-2,8-dimethylquinoline (C11H9Cl2N) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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 | C11H9Cl2N |
| Molecular Weight | 226.10 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 |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
- 2,6-Dichloro-3-ethylquinoline (CAS 1031927-99-7)
- 2,7-Dichloro-3,8-dimethylquinoline (CAS 108097-00-3)
- 1,3-Dichloro-6-ethylisoquinoline (CAS 1150271-19-4)
- 4,8-Dichloro-2,3-dimethylquinoline (CAS 1203-46-9)
- 4,6-Dichloro-2,3-dimethylquinoline (CAS 1203-72-1)
- 2,7-Dichloro-3-ethylquinoline (CAS 132118-51-5)
- 2,3-Dichloro-6,8-dimethylquinoline (CAS 1447949-09-8)
- 2,4-Dichloro-3,6-dimethylquinoline (CAS 1936054-65-7)
Recommended Standards
- 4,7-Dichloro-2,3-dimethylquinoline (CAS 858469-61-1)
- 4,8-Dichloro-2,6-dimethylquinoline (CAS 203626-46-4)
- 4,6-Dichloro-2,8-dimethylquinoline (CAS 21629-51-6)
- 4,8-Dichloro-2,7-dimethylquinoline (CAS 288151-53-1)
- Methyl 5-(4-(trifluoromethyl)phenyl)tetrahydrofuran-2-carboxylate (CAS 1421601-10-6)
- 4-Bromobenzo[c][1,2,5]thiadiazole (CAS 22034-13-5)
- 4-Bromobenzylzinc bromide, 0.50 M in THF (CAS 115055-85-1)
- 4-Methoxy-2-methyl-1-(phenylsulfonyl)-1H-pyrrolo[3,2-c]pyridine (CAS 1427502-40-6)
- 1-(3-Bromophenyl)-2-propyn-1-ol (CAS 29805-16-1)
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- 4-Methyl-N-(pyridin-3-ylmethyl)pyridin-3-amine (CAS 1342631-76-8)
- 4-(Difluoromethyl)-1,2,5-oxadiazole-3-carboxylic acid (CAS 2452465-16-4)
- (R)-2-amino-3-(hydroxydimethylsilyl)propanoic acid (CAS 770738-48-2)
- Peptide Fmoc-Thi-Thi-OH (CAS CATO-CPTD788552)
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