(R)-5-Isopropyl-2-methylcyclohexa-1,3-diene 1,3-Cyclohexadiene, 2-methyl-5-(1-methylethyl)-, (5R)- 1,3-Cyclohexadiene, 2-methyl-5-(1-methylethyl)-, (theta)- 4221-98-1 ALPHA-PHELLANDRENE EINECS 224-167-6 alpha-Phellandrene l-form