7-Chloro-1-methyl-1H-pyrazolo[4,3-d]pyrimidine

Name: 7-Chloro-1-methyl-1H-pyrazolo[4,3-d]pyrimidine
Brand: ChemScene
Availability: InStock
Rating: 5 (1 reviews)

CAS No. 923282-39-7
Cat. No. CS-W009037
Purity≥98%
MDL No.MFCD10000618

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
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7-Chloro-1-methyl-1H-pyrazolo[4,3-d]pyrimidine|CS-W009037

Structure of 923282-39-7

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General Information

CAS No. 923282-39-7
Cat. No. CS-W009037
Purity ≥98%
MDL No. MFCD10000618
Storage -20°C, sealed storage, away from moisture
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₆H₅ClN₄
Molecular Weight 168.58
Synonym(s) 7-chloro-1-methylpyrazolo[4,3-d]pyrimidine
SMILES CN1N=CC2=NC=NC(Cl)=C21

Description

7-Chloro-1-methyl-1H-pyrazolo[4,3-d]pyrimidine is a bench-stable heterocyclic scaffold featuring a chlorinated pyrazolopyrimidine core. This electron-deficient system enables efficient coupling in transition-metal-catalyzed reactions and serves as a key building block in medicinal chemistry for kinase inhibitors and nucleoside analogs.

Application

7-Chloro-1-methyl-1H-pyrazolo[4,3-d]pyrimidine serves as a versatile heterocyclic building block for medicinal chemistry and materials science. Its electron-deficient pyrazolopyrimidine core enables efficient palladium-catalyzed cross-coupling reactions, while the 7-chloro and 1-methyl groups provide orthogonal functional handles for further derivatization. The compound exhibits excellent bench stability and facilitates rapid access to diverse scaffolds in drug discovery campaigns.

Synthesis

Route1
- In-stock
  
  314021-93-7
- ~98%
- In-stock
  
  923282-39-7
References
- Sunesis Pharmaceuticals, Inc. Patent: US2007/27166 A1, 2007 ; Location in patent: Page/Page column 80 ; US 20070027166 A1

Safety Information

Download SDS

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-P305+P351+P338-P330-P362+P364-P403+P233-P405-P501

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Computational Chemistry Data

TPSA 43.6
LogP 1.0167
H_Acceptors 4
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazole compounds

Building Blocks Skeleton Aromatic heterocycle compounds Pyrimidine compounds

Key Words

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7-Chloro-1-methyl-1H-pyrazolo[4,3-d]pyrimidine

CAS No. 923282-39-7

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