2-Chloro-4,5-dimethylbenzonitrile CAS 1242339-03-2
| CAS No. | 1242339-03-2 |
| Molecular Formula | C9H8ClN |
| Molecular Weight | 165.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-Chloro-4,5-dimethylbenzonitrile (CAS 1242339-03-2) is a high-purity analytical reference standard with the molecular formula C9H8ClN and a molecular weight of 165.62 g/mol.
Structurally, 2-Chloro-4,5-dimethylbenzonitrile (C9H8ClN) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 165.62 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
As a certified reference material (CRM), 2-Chloro-4,5-dimethylbenzonitrile 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 | C9H8ClN |
| Molecular Weight | 165.62 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Chloro Standards
- 2-(2-Chloro-4-methylphenyl)acetonitrile (CAS 1000554-63-1)
- 4-Chloro-3,5-dimethylbenzonitrile (CAS 1097629-24-7)
- 5-Chloro-1-methyl-1H-indole (CAS 112398-75-1)
- 2-chloro-5-methoxy-pyridin-4-ol (CAS 1196145-74-0)
- 2-Chloro-N-(3-hydroxypropyl)propanamide (CAS 1211481-04-7)
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Recommended Standards
- 2-(Chloromethyl)-1H-indole (CAS 121384-27-8)
- 3-(3-Chlorophenyl)prop-2-yn-1-amine (CAS 1248691-80-6)
- 4-(2-Chloroethyl)benzonitrile (CAS 1260778-72-0)
- 2-(Chloromethyl)-6-methylbenzonitrile (CAS 1261780-69-1)
- 3-Amino-4-(tert-butyl)benzoic acid hydrochloride (CAS 91246-68-3)
- Di-tert-butylneopentylphosphine (CAS 60633-21-8)
- (R)-2-Amino-2-(naphthalen-2-yl)acetic acid hydrochloride (CAS 1393112-57-6)
- 1-Benzyl-4-(3-fluorophenyl)-1,2,3,6-tetrahydropyridine (CAS 75527-41-2)
- 2-Chloro-1-ethoxy-3-fluoro-4-(trifluoromethyl)benzene (CAS 1881295-18-6)
- 2-(3,5-Dimethylbenzoyl)benzoic acid (CAS 149817-31-2)
- Ethyl 2-(5-methoxy-2,3-dihydro-1H-inden-1-yl)acetate (CAS 162713-88-4)
- (R)-N-(Piperidin-3-yl)acetamide (CAS 1286317-53-0)
- methyl 4-(hydroxymethyl)bicyclo[2.1.1]hexane-1-carboxylate (CAS 2090676-64-3)
- Tirzepatide Impurity 48 (CAS CATO-C4X-324048)
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