2,4,6-OCTATRIENOIC ACID, 3-METHYL-7-(5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYL-2-NA 2,4,6-Octatrienoic acid, 3-methyl-7-(5,6,7,8-tetrahydro-5,5,8,8-tetramethyl-2-naphthalenyl)-,ethyl ester, (E,E,E)- 69277-64-1 BRN 5989966 Ro 13-2389