(3,5-Dichloro-pyridin-2-yl)-acetonitrile CAS 158141-35-6
| CAS No. | 158141-35-6 |
| Molecular Formula | C7H4Cl2N2 |
| Molecular Weight | 187.03 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 187.03 g/mol gives (3,5-Dichloro-pyridin-2-yl)-acetonitrile distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
(3,5-Dichloro-pyridin-2-yl)-acetonitrile (CAS 158141-35-6), molecular formula C7H4Cl2N2 and molecular weight 187.03 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, (3,5-Dichloro-pyridin-2-yl)-acetonitrile (C7H4Cl2N2) contains a nitrile group, chlorine substitution, an aromatic ring system. 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 187.03 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.
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 | C7H4Cl2N2 |
| Molecular Weight | 187.03 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| 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.) | 2002 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Dichloro Standards
- 4,7-Dichloro-1H-indazole (CAS 1000341-86-5)
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- 2,5-Dichloro-4-methylpyridine-3-carbonitrile (CAS 101320-87-0)
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- 4,6-Dichloro-2-methylnicotinonitrile (CAS 1185190-81-1)
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Recommended Standards
- 2-Bromo-5-methylphenol (CAS 14847-51-9)
- 2,7-Dichloro-1H-benzo[d]imidazole (CAS 15965-56-7)
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- 4-Bromo-1,1-difluoro-3-methylbutane (CAS 1783578-17-5)
- 2-(Phenylamino)-4H-pyrido[3,2-e][1,3]selenazin-4-one (CAS 89914-58-9)
- Dimethyl(4-vinylphenyl)silane (CAS 4556-72-3)
- rac-(2S,3R)-2-(4-chlorophenyl)oxan-3-amine hydrochloride (CAS 2059917-85-8)
- 4,6-Dichloro-5-(chloromethyl)pyrimidin-2-amine (CAS 850554-82-4)
- Methyl 1-(6-chloropyridin-2-yl)-5-cyclopropyl-1H-pyrazole-4-carboxylate (CAS 1150164-34-3)
- 4-(3-methylphenyl)-5-sulfanyl-8,10-dithia-4,6-diazatricyclo[7.4.0.0²,⁷]trideca-1(9),2(7),5-trien-3-one (CAS 796067-52-2)
- 4-(Benzo[d]thiazol-2-ylthio)but-2-yn-1-ol (CAS 431067-90-2)
- 2-Nitro-alpha-(trifluoromethyl)benzyl Alcohol (CAS 700362-32-9)
- 2-Cyclopropylpyrimidin-4-amine (CAS 265324-26-3)
- Serpent Peptide (CAS 823202-99-9)
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