Alken Cyclohexen Heptabarb 1,3-Cyclohexadien 1,4-Cyclohexadien Cyclopenten Levoverbenone Codein Hydrocarbon thơm đa vòng Alkadien Cycloalkan Polyacen Hydrocarbon thơm Hydrocarbon Alkan Alkyn 1,2,3-Trimethylbenzen
Alken Cyclohexen Heptabarb 1,3-Cyclohexadien 1,4-Cyclohexadien Cyclopenten Levoverbenone Codein Hydrocarbon thơm đa vòng Alkadien Cycloalkan Polyacen Hydrocarbon thơm Hydrocarbon Alkan Alkyn 1,2,3-Trimethylbenzen