ACD/Name

Conjunctive Nomenclature

Rule C-55

55.1 - If the cyclic and the acyclic component are joined by a double bond, the locants of this bond are placed as superscripts to a Greek capital delta that is inserted between the names of the two components. The locant for the cyclic precedes that for the acyclic component.

Example to Rule C-55.1

Indene-Δ1,α-acetic acid

See Recommendations'93 R-1.2.4

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Conjunctive Nomenclature
Rule C-56
Rule C-57
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This HTML reproduction of Sections A, B and C of IUPAC "Blue Book" is as close as possible to the published version [see Nomenclature of Organic Chemistry, Sections A, B, C, D, E, F, and H, Pergamon Press, Oxford, 1979. Copyright 1979 IUPAC.] If you need to cite these rules please quote this reference as their source.

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