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CAS 79583-19-0

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1H-Pyrazole-4-carbonylchloride, 1-methyl-

Description:
1H-Pyrazole-4-carbonyl chloride, 1-methyl- is an organic compound characterized by its pyrazole ring structure, which is a five-membered heterocyclic compound containing two nitrogen atoms. The presence of a carbonyl chloride functional group indicates that it is an acyl chloride, making it reactive and useful in various chemical syntheses. This compound typically appears as a colorless to pale yellow liquid or solid, depending on its purity and storage conditions. It is soluble in organic solvents such as dichloromethane and ether but is generally insoluble in water due to its hydrophobic nature. The compound is often used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, where it can participate in nucleophilic acyl substitution reactions. Safety precautions should be taken when handling this substance, as it can be corrosive and may release toxic gases upon hydrolysis. Proper storage in a cool, dry place, away from moisture and incompatible materials, is essential to maintain its stability and reactivity.
Formula:C5H5ClN2O
Synonyms:
  • 1-Methyl-1H-pyrazole-4-carbonylchloride
  • 1-Methylpyrazole-4-carbonyl chloride
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