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1-butyl-5-chloro-3-methyl-1H-pyrazole-4-carbaldehyde (CAS No. 956977-55-2)

1-butyl-5-chloro-3-methyl-1H-pyrazole-4-carbaldehyde is a versatile organic compound with the CAS registry number 956977-55-2. This compound belongs to the class of pyrazole derivatives, which are widely studied for their potential applications in various fields, including pharmaceuticals, agrochemicals, and materials science. The molecule features a pyrazole ring substituted with a butyl group at position 1, a chlorine atom at position 5, a methyl group at position 3, and an aldehyde group at position 4. These substituents contribute to the compound's unique chemical properties and reactivity.

The synthesis of 1-butyl-5-chloro-3-methyl-1H-pyrazole-4-carbaldehyde typically involves multi-step reactions, often starting from simpler precursors such as aldehydes and amines. Recent advancements in synthetic chemistry have enabled more efficient and selective methods for constructing pyrazole derivatives. For instance, the use of microwave-assisted synthesis has been reported to significantly accelerate the formation of such compounds while maintaining high yields and purity. This approach is particularly advantageous in research settings where rapid experimentation is required.

One of the most promising applications of 1-butyl-5-chloro-3-methyl-1H-pyrazole-4-carbaldehyde lies in its potential as a precursor for bioactive molecules. Pyrazole derivatives are known for their ability to modulate various biological targets, including enzymes, receptors, and ion channels. Recent studies have demonstrated that this compound can serve as a scaffold for designing inhibitors of kinase enzymes, which are implicated in numerous diseases such as cancer and inflammatory disorders. The aldehyde group at position 4 provides an excellent site for further functionalization, enabling the introduction of additional bioactive moieties through reactions such as condensation or coupling.

In addition to its biological applications, 1-butyl-5-chloro-3-methyl-1H-pyrazole-4-carbaldehyde has shown potential in materials science. The pyrazole ring's aromaticity and electron-withdrawing substituents make it suitable for use in π-conjugated systems, which are essential components of organic electronics. Researchers have explored its use in the development of organic light-emitting diodes (OLEDs) and photovoltaic materials. The chlorine atom at position 5 contributes to the molecule's electron-deficient nature, enhancing its ability to participate in charge transfer processes—a critical property for electronic devices.

The physical properties of 1-butyl-5-chloro-3-methyl-1H-pyrazole-4-carbaldehyde have been extensively characterized using modern analytical techniques. High-resolution mass spectrometry (HRMS) has confirmed its molecular formula as C??H??ClN?O, with a molecular weight of approximately 260 g/mol. Its melting point is reported to be around 180°C under standard conditions. The compound is sparingly soluble in water but exhibits good solubility in organic solvents such as dichloromethane and acetonitrile, making it suitable for various organic reactions.

Recent studies have also focused on the environmental fate and toxicity of 1-butyl-5-chloro-3-methyl-1H-pyrazole-4-carbaldehyde. Ecotoxicological assessments indicate that it exhibits low acute toxicity to aquatic organisms under standard test conditions. However, long-term exposure studies are still needed to fully understand its impact on ecosystems. Regulatory agencies have not classified this compound as hazardous under current guidelines; however, prudent handling practices are recommended due to its chemical reactivity.

In conclusion, 1-butyl-5-chloro

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