1,3-Dichloro-6,7-dihydro-5H-cyclopenta[c]pyridine CAS 72605-56-2
| CAS No. | 72605-56-2 |
| Molecular Formula | C8H7Cl2N |
| Molecular Weight | 188.05 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 1,3-Dichloro-6,7-dihydro-5H-cyclopenta[c]pyridine (C8H7Cl2N) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 188.05 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
CATO supplies 1,3-Dichloro-6,7-dihydro-5H-cyclopenta[c]pyridine (CAS 72605-56-2), a certified reference material (molecular formula C8H7Cl2N, MW 188.05 g/mol) for analytical method development and quality control.
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 | C8H7Cl2N |
| Molecular Weight | 188.05 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 methanol, acetonitrile, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Dichloro Standards
- 2,6-Dichloro-3-cyclopropylpyridine (CAS 1211529-21-3)
- 2,6-Dichloro-4-cyclopropylpyridine (CAS 1374143-99-3)
- 6,7-Dichloro-2,3-dihydro-1h-indole (CAS 162100-52-9)
- 5,6-Dichloro-2,3-dihydro-1H-indole (CAS 162100-53-0)
- 2,4-Dichloro-5-(prop-1-en-2-yl)pyridine (CAS 1622840-98-5)
- 2,3-Dichloro-5-cyclopropylpyridine (CAS 2260845-27-8)
- 2,4-Dichloro-6,7-dihydro-5H-cyclopenta[b]pyridine (CAS 56946-65-7)
- 4,7-Dichloro-2,3-dihydro-1h-indole (CAS 96129-78-1)
Recommended Standards
- 4-Bromothiophene-3-carbonitrile (CAS 18895-10-8)
- 4-Bromothiophene-2-carbonitrile (CAS 18791-99-6)
- 3-Bromothiophene-2-carbonitrile (CAS 18791-98-5)
- 2-Bromothiophene-3-carbonitrile (CAS 56182-43-5)
- 1-(2-Anthryl)-2-methoxyethylamine (CAS 1270502-19-6)
- 2'-Methyl-[1,1'-biphenyl]-4-carbaldehyde (CAS 108934-21-0)
- Phenobarbital 1-Butyric Acid (CAS 73211-20-8)
- 1-(2,4-Dichlorobenzyl)-N-methylpiperidin-3-amine hydrochloride (CAS 1289386-52-2)
- 4-((Cyclopentylamino)methyl)benzoic acid (CAS 932279-00-0)
- 3-(5-(1-Acetylpyrrolidin-2-yl)pyrazin-2-yl)propanoic acid (CAS 1316219-35-8)
- 1-Ethyl-4-((tetrahydro-2H-pyran-4-yl)amino)-1H-pyrazolo[3,4-b]pyridine-5-carbohydrazide (CAS 730937-45-8)
- 6-Chloro-2-(4-chlorophenyl)-1-((4-methoxybenzyl)oxy)-1H-benzo[d]imidazole (CAS 338978-92-0)
- 4-Bromo-7-fluoroisoquinoline (CAS 1416500-77-0)
- Semaglutide impurity 87 (CAS CATO-C4X-222687)
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