3-Chloro-4-methylpyridine CAS 72093-04-0
| CAS No. | 72093-04-0 |
| Molecular Formula | C6H6ClN |
| Molecular Weight | 127.57 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-Chloro-4-methylpyridine (CAS 72093-04-0), molecular formula C6H6ClN and molecular weight 127.57 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 3-Chloro-4-methylpyridine (C6H6ClN) is characterized by a nitrile group, chlorine substitution, an aromatic ring system. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 3-Chloro-4-methylpyridine 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 | C6H6ClN |
| Molecular Weight | 127.57 g/mol |
| 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.) | 1977 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 4-Chloro-3-methylpyridine (CAS 1681-36-3)
- 2-Chloro-3-methylpyridine (CAS 18368-76-8)
- 3-Chloro-5-methylpyridine (CAS 19230-55-8)
- 3-Chloro-2-methylpyridine (CAS 72093-03-9)
- 5-Chloro-2-methylpyridine (CAS 72093-07-3)
- 2-Chloro-5-methylpyridine (CAS 18368-64-4)
- 4-Chloro-2-picoline (CAS 3678-63-5)
- 4-Chloro-1H-imidazole-5-carbonitrile (CAS 1333380-68-9)
Recommended Standards
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- (5E)-5-[(4-Bromophenyl)methylidene]-2-imino-1-methylimidazolidin-4-one (CAS 127718-57-4)
- 1-(2-Chlorobenzyl)-1H-imidazole-2-carboxylic acid (CAS 1439898-30-2)
- 3-(3,4-Dimethoxyphenyl)-1H-pyrazole (CAS 154257-70-2)
- Abemaciclib Impurity 14 (CAS CATO-C4X-293714)
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- N-(5-Cyano-3-cyclopropoxypyridin-2-yl)methanesulfonamide (CAS 1243440-99-4)
- 2,4,6-Trichloro-5-ethylpyrimidine (CAS 1780-38-7)
- 2-Chloro-n-(2-methylpropyl)-n-(2,2,2-trifluoroethyl)acetamide (CAS 1184088-09-2)
- 2-(Difluoromethyl)-3,4-dimethoxy-5-nitropyridine (CAS 1806820-53-0)
- 30003-72-6 insulin chain b oxidized (CAS 30003-72-6)
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