1,4-Dimethyl-1H-pyrazole-5-carbaldehyde

Name: 1,4-Dimethyl-1H-pyrazole-5-carbaldehyde
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CAS No. 1171645-70-7
Cat. No. CS-0137699
Purity≥96%
MDL No.MFCD11506567

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Type	HazMat Fee
Excepted Quantity	$0.00
FedEx Limited Quantities Ground	$0.00
Hazmat Ground shipping	$50.00+
Inaccessible (Haz class 6.1 or 9), Domestic	$68.00+
Accessible (Haz class 3, 4, 5 or 8), Domestic	$158.00+
Inaccessible (Haz class 6.1 or 9), International	$108.00+
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1,4-Dimethyl-1H-pyrazole-5-carbaldehyde|CS-0137699

Structure of 1171645-70-7

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Description

1,4-Dimethyl-1H-pyrazole-5-carbaldehyde features a pyrazole core bearing methyl groups at the 1- and 4-positions, with a formyl group at C5. This electron-deficient aldehyde integrates readily into heterocyclic scaffolds, offering enhanced stability and solubility in polar organic media. The para-positioned carbonyl enables efficient coupling reactions under mild conditions.

Application

1,4-Dimethyl-1H-pyrazole-5-carbaldehyde serves as a versatile building block in medicinal chemistry and heterocyclic synthesis. The aldehyde group enables efficient derivatization via reductive amination, Grignard additions, and Wittig reactions, while the pyrazole core offers robust stability and tunable electronic properties. Its methyl substituents enhance solubility and facilitate purification, making it well-suited for high-throughput screening campaigns and API intermediate development.

General Information

CAS No. 1171645-70-7
Cat. No. CS-0137699
Purity ≥96%
MDL No. MFCD11506567
Storage -20°C, sealed storage, away from moisture
Shipping Room temperature in continental US; may vary elsewhere.
Molecular Formula C₆H₈N₂O
Molecular Weight 124.14
Synonym(s) 2,4-Dimethyl-2H-pyrazole-3-carbaldehyde
SMILES O=CC1=C(C)C=NN1C

Computational Chemistry Data

TPSA 34.89
LogP 0.54102
H_Acceptors 3
H_Donors 0
Rotatable_Bonds 1

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-P330-P362+P364-P405-P501

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Other Classifications

Building Blocks Skeleton Aromatic heterocycle compounds Pyrazole compounds

Key Words

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1,4-Dimethyl-1H-pyrazole-5-carbaldehyde

CAS No. 1171645-70-7

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