3-Chloro-1,5-dimethyl-1H-pyrazole

Name: 3-Chloro-1,5-dimethyl-1H-pyrazole
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CAS No. 51500-32-4
Cat. No. CS-0101169
Purity≥98%
MDL No.None

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
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Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
Accessible (Haz class 3, 4, 5 or 8), International	$238.00+

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3-Chloro-1,5-dimethyl-1H-pyrazole|CS-0101169

Structure of 51500-32-4

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General Information

CAS No. 51500-32-4
Cat. No. CS-0101169
Purity ≥98%
MDL No. None
Storage Store at room temperature
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₅H₇ClN₂
Molecular Weight 130.58
Synonym(s) None
SMILES CC1=CC(Cl)=NN1C

Description

3-Chloro-1,5-dimethyl-1H-pyrazole features a chlorinated pyrazole core with methyl groups at the 1- and 5-positions, delivering enhanced electron-deficient character and improved stability. This scaffold integrates readily into medicinal chemistry libraries, serving as a robust bioisostere for phenyl or heteroaryl moieties in drug discovery campaigns.

Application

3-Chloro-1,5-dimethyl-1H-pyrazole serves as a versatile building block in medicinal chemistry and agrochemical synthesis, enabling efficient construction of substituted pyrazole scaffolds. Its chloro group facilitates nucleophilic substitution and transition-metal-catalyzed coupling reactions, while the methyl substituents enhance stability and modulate electronic properties. The compound exhibits good bench stability, ease of purification, and compatibility with common functional groups, making it well-suited for iterative synthesis workflows.

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 17.82
LogP 1.38192
H_Acceptors 2
H_Donors 0
Rotatable_Bonds 0

Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazole compounds

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3-Chloro-1,5-dimethyl-1H-pyrazole

CAS No. 51500-32-4

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