Lot numbers can be found on the outside label of a product:
2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one
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CAS No. 5418-94-0
- Cat. No. CS-0071942
- Purity≥98%
- MDL No.None
*For research and further manufacturing use only, not for direct human use.
![2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one|CS-0071942](https://file.chemscene.com/productPIC/CS-0071942.gif)
Structure of 5418-94-0
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General Information
- CAS No. 5418-94-0
- Cat. No. CS-0071942
- Purity ≥98%
- MDL No. None
- Storage -20°C
- Shipping Room temperature in continental US; may vary elsewhere.
- Molecular Formula C₈H₅ClN₂O
- Molecular Weight 180.59
- Synonym(s) 2-cloro-4H-pirido
- SMILES O=C1N(C=CC=C2)C2=NC(Cl)=C1
Description
2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one is a heterocyclic scaffold featuring a chlorine atom at the 2-position and a carbonyl group at the 4-position, enabling direct incorporation into kinase inhibitors and antiviral agents. The electron-deficient pyrimidine core supports efficient coupling reactions under standard conditions. This bench-stable compound serves as a key intermediate in medicinal chemistry campaigns targeting purine analogs.
Application
2-Chloro-4H-pyrido[1,2-a]pyrimidin-4-one serves as a versatile heterocyclic building block for medicinal chemistry and materials science. Its chloro-substituted pyridopyrimidinone core enables efficient late-stage functionalization via palladium-catalyzed cross-coupling reactions. The scaffold exhibits excellent bench stability, facilitates straightforward purification, and demonstrates broad compatibility with diverse functional groups, making it well-suited for the synthesis of kinase inhibitors and other bioactive compounds.
Synthesis
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Route1
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In-stock
![2-Hydroxy-4H-pyrido[1,2-a]pyrimidin-4-one|CS-0081582](https://file.chemscene.com/productPIC/CS-0081582.gif)
27420-41-3 - ~88%
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In-stock
5418-94-0
References
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Abass, Mohamed; Mayas, Aisha S. Heteroatom Chemistry, 2007 , vol. 18, # 1 p. 19 - 27
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Route2
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![2H-pyrido[1,2-a]pyrimidine-2,4(3H)-dione|CS-0316332](https://file.chemscene.com/productPIC/CS-0316332.gif)
22288-66-0 - ~%
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In-stock
5418-94-0
References
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Journal of the Chemical Society, , p. 209 Journal of the American Chemical Society, , vol. 74, p. 4910
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Route3
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504-29-0 - ~%
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In-stock
5418-94-0
References
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Journal of Heterocyclic Chemistry, , vol. 24, p. 329 - 335
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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 34.37
- LogP 1.3479
- H_Acceptors 3
- H_Donors 0
- Rotatable_Bonds 0
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Key Words
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