4-(3-Chloro-5,6-dihydrocyclopenta[c]pyrazol-2(4H)-yl)benzonitrile CAS 63419-40-9
| CAS No. | 63419-40-9 |
| Molecular Formula | C13H10ClN3 |
| Molecular Weight | 243.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
4-(3-Chloro-5,6-dihydrocyclopenta[c]pyrazol-2(4H)-yl)benzonitrile (CAS 63419-40-9) is a high-purity analytical reference standard with the molecular formula C13H10ClN3 and a molecular weight of 243.69 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution, 4-(3-Chloro-5,6-dihydrocyclopenta[c]pyrazol-2(4H)-yl)benzonitrile is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 243.69 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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 | C13H10ClN3 |
| Molecular Weight | 243.69 g/mol |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1975 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
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Recommended Standards
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- 4-(4-Chlorophenyl)-2-(methylamino)nicotinonitrile (CAS 478080-40-9)
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- 3-(Methylsulfonyl)benzaldehyde (CAS 43114-43-8)
- 2-((1,3-Dioxoisoindolin-4-yl)thio)benzoic acid (CAS 92461-32-0)
- n-Ethyl-2,3-dihydro-1h-indene-5-sulfonamide (CAS 1094654-09-7)
- Ethyl 5-(3-bromophenyl)-1H-pyrazole-3-carboxylate (CAS 1326811-82-8)
- 2-(4-(1,1-Difluoroethyl)phenyl)acetonitrile (CAS 1780191-22-1)
- Semaglutide impurity 257 (CAS CATO-C4X-2226257)
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