(organic chemistry) Any of several isomeric unsaturated aldehydes that have seven carbon atoms

plural of heptene

(organic chemistry) Any of many isomers of the alkene having seven carbon atoms and one double bond; a mixture of such isomers used in lubricants etc

(organic chemistry, in combination) A derivative of heptene where the next name part starts with a vowel, often "-one" or "-ol".

Synonym of melonal