2,4-Dichloro-5H,7H,8H-pyrano[4,3-d]pyrimidine

Name: 2,4-Dichloro-5H,7H,8H-pyrano[4,3-d]pyrimidine
Brand: ChemScene
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CAS No. 944902-88-9
Cat. No. CS-0052165
Molecule weight205.04
Purity≥97%
MDL No.None

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Excepted Quantity	$0.00
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2,4-Dichloro-5H,7H,8H-pyrano[4,3-d]pyrimidine|CS-0052165

Structure of 944902-88-9

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General Information

CAS No. 944902-88-9
Cat. No. CS-0052165
Purity ≥97%
MDL No. None
Storage -20°C, sealed storage, away from moisture
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₇H₆Cl₂N₂O
Molecular Weight 205.04
Synonym(s) 2,4-Dichloro-7,8-dihydro-5H-pyrano[4,3-d]pyrimidine
SMILES ClC1=NC2=C(COCC2)C(Cl)=N1

Description

2,4-Dichloro-5H,7H,8H-pyrano[4,3-d]pyrimidine features a fused pyrano-pyrimidine core with strategic chlorine substituents at the 2 and 4 positions, enhancing electrophilicity for downstream functionalization. This bench-stable heterocycle integrates readily into synthetic sequences requiring electron-deficient aromatic systems.

Application

2,4-Dichloro-5H,7H,8H-pyrano[4,3-d]pyrimidine serves as a versatile building block in heterocyclic synthesis, enabling efficient access to pyrano[4,3-d]pyrimidine scaffolds through nucleophilic substitution and coupling reactions. Its dichloro functionality provides orthogonal reactivity for sequential functionalization, while the fused ring system offers enhanced stability and predictable regiochemistry. Ideal for medicinal chemistry campaigns requiring robust, bench-stable intermediates with high synthetic utility in API development workflows.

Safety Information

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GHS Pictogram :	GHS No : GHS07
Signal Word : Warning	UN#: N/A
Class : N/A	Packing Group : N/A
Hazard Statements : H302-H315-H319-H335
Precautionary Statements : P261-P264-P270-P271-P280-P302+P352-P304+P340-P330-P362+P364-P405-P501

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Computational Chemistry Data

TPSA 35.01
LogP 1.8561
H_Acceptors 3
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyrimidine compounds

Key Words

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2,4-Dichloro-5H,7H,8H-pyrano[4,3-d]pyrimidine

CAS No. 944902-88-9

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