What is the name of a hydrocarbon that has the formula CH3(CH2)4CCH?

The formula represents CH₃–(CH₂)₄–C≡CH, with a triple bond at the end of the chain. Counting the carbon atoms gives 7, so the parent name is heptyne. Number from the end nearest the triple bond; it begins at carbon 1, making the name 1-heptyne.

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