Delta-6-cannabidiol (∆6-CBD) is a positional isomer of cannabidiol, found in only trace amounts in natural cannabis plants but readily synthesised from cannabidiol by base-catalysed migration of the double bond.[1][2][3]
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^US 20170008868, Dialer L, Petrovic D, Weigl U., "Process for the production of cannabidiol and delta-9-tetrahydrocannabinol", published 2015-07-10, assigned to Purisys LLC
^WO 2020248059, Adair C, Geiling B, Haghdoost Manjili M., "Methods for preparing cannabinoids by base-promoted double-bond migration", published 2020-12-17, assigned to Canopy Growth Corporation