Terpene Hydrocarbons

Rule A-73. Monocyclic Terpenes

73.1 - Methane Type: Monocyclic terpene hydrocarbons of this type (ortho-, metha-, and para-isomers) are named menthane, menthene, menthadiene, etc., and are given the fixed numbering of menthane (Formula I). Such compounds substituted by additional alkyl groups are named in accordance with Rules A-11 and A-61.

Examples to Rule A-73.1

73.2 - Tetramethylcyclohexane Type: Monocyclic terpene hydrocarbons of this type are named systematically as derivatives of cyclohexane, cyclohexene, and cyclohexadiene (see Rule A-11)

Examples to Rule A-73.2

Bicyclic Terpenes
Terpene Radicals


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