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This ring has five carbon atoms and a double bond, so it's a cyclopentene.
例子:这个环有五个碳原子和一个双键, 所以它是一个环戊烯。
环戊烯(Cyclopentene)是分子式为C5H8的有机化合物。它是具有类似汽油味道的无色液体。
Cyclopentene is a chemical compound with the formula C5H8. It is a colorless liquid with a petrol-like odor. It is one of the cycloalkenes.
Cyclopentene is produced industrially in large amounts. It is used as a monomer for synthesis of plastics, and in a number of chemical syntheses.
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