Lot numbers can be found on the outside label of a product:
2,4-Dichloro-6,7-dihydro-5H-cyclopenta[b]pyridine
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CAS No. 56946-65-7
- Cat. No. CS-W001204
- Purity≥98%
- MDL No.MFCD15144700
*For research and further manufacturing use only, not for direct human use.
![2,4-Dichloro-6,7-dihydro-5H-cyclopenta[b]pyridine|CS-W001204](https://file.chemscene.com/productPIC/CS-W001204.gif)
Structure of 56946-65-7
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General Information
- CAS No. 56946-65-7
- Cat. No. CS-W001204
- Purity ≥98%
- MDL No. MFCD15144700
- Storage 4°C
- Shipping Room temperature in continental US; may vary elsewhere.
- Molecular Formula C₈H₇Cl₂N
- Molecular Weight 188.05
- Synonym(s) 2,4-dichloro-5H,6H,7H-cyclopenta[b]pyridine
- SMILES ClC1=C(CCC2)C2=NC(Cl)=C1
Description
This cyclopenta[b]pyridine derivative features a fused bicyclic core with strategically positioned chlorine atoms at the 2 and 4 positions, enhancing electron deficiency and enabling selective reactivity in cross-coupling and heterocyclic synthesis. The dihydro structure provides synthetic accessibility while maintaining stability under standard conditions.
Application
2,4-Dichloro-6,7-dihydro-5H-cyclopenta[b]pyridine serves as a versatile building block for heterocyclic synthesis, enabling efficient access to substituted pyridine scaffolds via palladium-catalyzed cross-coupling reactions. Its dichloro substitution pattern facilitates sequential functionalization, while the saturated cyclopenta ring offers enhanced stability and predictable reactivity in standard synthetic workflows. The compound exhibits excellent bench stability and is readily purified by column chromatography, making it well-suited for medicinal chemistry and process development applications.
Synthesis
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Route1
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824-72-6 -
In-stock
![4-Hydroxy-1,5,6,7-tetrahydro-2H-cyclopenta[b]pyridin-2-one|CS-0099223](https://file.chemscene.com/productPIC/CS-0099223.gif)
55618-81-0 - ~%
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In-stock
56946-65-7
References
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Robison Journal of the American Chemical Society, 1958 , vol. 80, p. 5481
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Route2
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In-stock
55618-81-0
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56946-65-7
References
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Prelog; Szpilfogel Helvetica Chimica Acta, 1945 , vol. 28, p. 1684,1690
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Route3
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7149-18-0 - ~%
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56946-65-7
References
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Prelog; Szpilfogel Helvetica Chimica Acta, 1945 , vol. 28, p. 1684,1690
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Safety Information
Download SDS|
GHS Pictogram :
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GHS No : GHS07
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Signal Word : Warning
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UN#: N/A
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Class : N/A
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Packing Group : N/A
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Hazard Statements : H302-H315-H319-H335
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Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501
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Quality Control
Computational Chemistry Data
- TPSA 12.89
- LogP 2.8771
- H_Acceptors 1
- H_Donors 0
- Rotatable_Bonds 0
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Key Words
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