(âÂÂ)-ñ-Pinene synthase (EC 4.2.3.119, (âÂÂ)-ñ-pinene/(âÂÂ)-camphene synthase, (âÂÂ)-ñ-pinene cyclase) is an enzyme with systematic name geranyl-diphosphate diphosphate-lyase [cyclizing, (âÂÂ)-ñ-pinene-forming]. This enzyme catalyses the following chemical reaction
Cyclase II of Salvia officinalis (sage) gives about equal parts (âÂÂ)-ñ-pinene, (âÂÂ)-ò-pinene and (âÂÂ)-camphene.