3856-25-5 8-Isopropyl-1,3-dimethyltricyclo(4.4.0.02,7)dec-3-ene ALPHA-COPAENE Copaene EINECS 223-364-4 Tricyclo(4.4.0.0(2,7))dec-3-ene, 1,3-dimethyl-8-(1-methylethyl)-, stereoisomer