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Structure of 299930-70-4
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3-Chloro-1-methyl-4-nitro-1H-pyrazole features a conjugated pyrazole core with complementary electron-withdrawing nitro and chloro substituents, enabling efficient coupling in cross-coupling reactions. The methyl group enhances solubility and stability under standard conditions, while the para-nitro functionality facilitates subsequent functionalization. This scaffold serves as a robust building block for bioactive heterocycles and pharmaceutical intermediates.
3-Chloro-1-methyl-4-nitro-1H-pyrazole serves as a versatile heterocyclic building block for medicinal chemistry and agrochemical synthesis. Its orthogonal functional groups enable sequential transformations, including palladium-catalyzed cross-couplings at the chloro position and reduction of the nitro group to an amine under mild conditions. The molecule exhibits good bench stability, facilitates straightforward purification, and functions effectively in multi-step syntheses requiring precise regiocontrol and functional group compatibility.
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GHS Pictogram :
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GHS No : GHS07
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Signal Word : Warning
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UN#: N/A
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Class : N/A
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Packing Group : N/A
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Hazard Statements : H302-H315-H319-H335
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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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Lot numbers can be found on the outside label of a product: