syn-Pimara-7,15-diene synthase (EC 4.2.3.35, 9ò-pimara-7,15-diene synthase, OsDTS2, OsKS4) is an enzyme with systematic name 9ñ-copalyl-diphosphate diphosphate-lyase (9ò-pimara-7,15-diene-forming). This enzyme catalyses the following chemical reaction
This enzyme is a class I terpene synthase.