(âÂÂ)-Germacrene D synthase (EC 4.2.3.75) is an enzyme with systematic name (2E,6E)-farnesyl-diphosphate diphosphate-lyase ((âÂÂ)-germacrene-D-forming). This enzyme catalyses the following chemical reaction
In Solidago canadensis the biosynthesis results in the pro-R hydrogen at C-1 of the farnesyl diphosphate ending up at C-11 of the (âÂÂ)-germacrene D .