The molecular formula C10H18 may refer to.
The decynes are a subgroup from the group of alkynes.
1-Decyne is an alkyne hydrocarbon with the chemical formula C10H18.
2-Butyne (dimethylacetylene, crotonylene or but-2-yne) is an alkyne with chemical formula CH3C≡CCH3.
3-Hexyne is the organic compound with the formula C2H5CCC2H5, simplified to C6H10.
4-Octyne, also known as dipropylethyne, is a type of alkyne with a triple bond at its fourth carbon (the '4-' indicates the location of the triple bond in the chain).