6-Chloro-3-ethynyl-2-methylpyridine CAS 79039-86-4
| CAS No. | 79039-86-4 |
| Molecular Formula | C8H6ClN |
| Molecular Weight | 151.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 151.59 g/mol gives 6-Chloro-3-ethynyl-2-methylpyridine distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
6-Chloro-3-ethynyl-2-methylpyridine (CAS 79039-86-4) is a high-purity analytical reference standard with the molecular formula C8H6ClN and a molecular weight of 151.59 g/mol.
6-Chloro-3-ethynyl-2-methylpyridine (C8H6ClN) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C8H6ClN |
| Molecular Weight | 151.59 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1979 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
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- 3-Chloro-n-methoxy-n-methylpropanamide (CAS 1062512-53-1)
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Recommended Standards
- 5-Chloro-3H-indole (CAS 754948-43-1)
- 6-Chloro-3H-indole (CAS 754156-53-1)
- 5-Chloro-2-methylphenyl isocyanide (CAS 602262-01-1)
- Acetamide, n-(2-chloroethyl)-2-methoxy- (CAS 915369-55-0)
- 3-Chloro-N-(5-fluoro-2-methylphenyl)propanamide (CAS 908494-83-7)
- 2,4,6-Trichloro-N-(4-chlorophenyl)pyrimidine-5-carboxamide (CAS 87847-92-5)
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- 6,7-Dimethoxy-N-phenylquinazolin-4-amine (CAS 21561-09-1)
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- 4-chloro-1,5-dimethyl-1h-pyraZole-3-carbohydrazide (CAS 512809-15-3)
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