4-Chloro-2-isobutylpyridine CAS 579475-97-1
| CAS No. | 579475-97-1 |
| Molecular Formula | C9H12ClN |
| Molecular Weight | 169.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-Chloro-2-isobutylpyridine (CAS 579475-97-1) is a high-purity analytical reference standard with the molecular formula C9H12ClN and a molecular weight of 169.65 g/mol.
The molecular framework of 4-Chloro-2-isobutylpyridine (C9H12ClN) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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).
As a certified reference material (CRM), 4-Chloro-2-isobutylpyridine 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 | C9H12ClN |
| Molecular Weight | 169.65 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1984 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
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Recommended Standards
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- 4-Chloro-3-methylphenethylamine (CAS 910400-04-3)
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- 2-(3-Ethoxyphenyl)-7,8-dimethylquinoline-4-carboxylic acid (CAS 895967-47-2)
- Methyl 3-formylbenzo[b]thiophene-5-carboxylate (CAS 530144-81-1)
- Heptyl Salicylate (CAS 6259-77-4)
- 1-Aminocyclopropanecarbothioamide (CAS 1159877-97-0)
- tert-Butyl (4-chloro-3-(difluoromethoxy)-5-nitropyridin-2-yl)carbamate (CAS 1956322-97-6)
- Calcitonin Impurity 19 (CAS CATO-C4X-221819)
- Pancreatic Polypeptide (31-36), amide, human (CAS 74012-13-8)
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