Pentyne may refer to:
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1-Pentyne, an organic compound, is a terminal alkyne. It is an isomer of 2-pentyne, an internal alkyne.
2-Pentyne, an organic compound, is an internal alkyne. It is an isomer of 1-pentyne, a terminal alkyne.
Potassium thioacetate is an organosulfur compound and a salt with the formula CH3COS−K+. This white, water-soluble solid is used as a reagent for preparing thioacetate esters and other derivatives.
Cyclopropylacetylene is an hydrocarbon with the chemical formula C
5H
6. Under normal conditions, the substance is a clear, flammable liquid. Cyclopropylacetylene is used as an important reagent to synthesize pharmaceuticals and other organic compounds.